6. A light bulb having resistance of 100 draws 200Ma current form a battery. a) Find the voltage supplied by the battery b) If the battery becomes weak and voltage drop to (0.85V/ how much would the current change

6. A light bulb having resistance of 100 draws 200Ma current form a battery. a) Find the voltage supplied by the battery b) If the battery becomes weak and voltage drop to (0.85V/ how much would the current change

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 78AP: A 20.00-ohm; 5.00-watt resistor is placed in series with a power supply, (a) What is the maxim tun...

See similar textbooks

Related questions

Q: and direct 0.75R x 10-19 N and 103.20 AN and 94.10

A: As per guideline we are suppose to do only one question from multiple questions. Given, q1 =…

Q: A square cube has sides with dimensions of 2.8 cm. If the mass of the cube is 58 grams, what is the…

Q: Physics Question

Q: A 2.9-kg mass oscillates with a period of 0.67 seconds on a spring. What is the spring constant?…

Q: In the figure below, q1 = +2.00 nC and q2 = -8.00 nC. At what postion can an electron be placed and…

A: Given : q1 = + 2nC ; q2= -8 nC Find : At what position and electron be placed and experienced zero…

Q: b- b- d a b+ b+

Q: A cylindrical steel cable has a cross sectional area of 67.0000 cm² at 21.0000 °C. What is its cross…

A: Write the expression for the resistance. Here, Ao is the original cross-sectional area, α is the…

Q: Light from a medium with index of refraction n₁-1.22 passes into a medium with index of refraction…

A: Data provided: Index of refraction (n1) = 1.22 θ1 = 27° and θ2 = 19° Asked: The value of n2

Q: A five-sided object, whose dimensions are shown in the drawing, is placed in a uniform magnetic…

A: CONCEPT:

Q: After reviewing so hard your mass becomes 60.0 kg. Right after the exam you decided to be fired by a…

Q: A proton has an initial speed of 1.0 × 105 m/s. It enters a region with a constant electric field…

Q: In the figure below, q1 = +1.00 nC and q2 = -9.00 nC. At what position is the net electric field due…

A: Given q1=+1.00 nC q2=-9.00 nC distance between charges=0.1 m Required value of x at which electric…

Q: A gymnast is attempting to perform splits. As she does this, you can assume that the force between…

Q: A light bulb in a camper's flashlight is labeled 4.1 V, 0.40 A. Find the equivalent current if three…

A: Given that flashlight is labelled as 4.1V, 0.40 A. r=v/I=4.1/0.40=10.25ohm The resultant registance…

Q: 4) A person with a mass of 70 kg is running on the edge of a horizontal, circular platform. It is…

A: The mass plays a crucial role in inertia as inertia depends on mass. But in rotation, inertia…

Q: What is the total translational kinetic energy of the gas molecules of air at atmospheric pressure…

Q: Laws of motion and explains all three laws in diagrams

Q: An art piece is initially moving along a horizontal frictionless surface. Warren applied a force on…

Q: A point on the third nodal line from the center of an interference pattern is 37.0 cm from one…

A: Solution: Given: P = point on third nodal line from the centre of interference pattern s1 = distance…

Q: The force between two similar charges is 90 N, and the distance between them is 1 cm, what is the…

Q: 19. On a very muddy American football field, a 95.0-kg linebacker tackles a 120.-kg halfback. Right…

A: Write the given values with the suitable variables. m1=95 kgm2=120 kgu1=8 m/su2=-4 m/s Here, m1, m2,…

Q: 1 25°

Q: If it requires energy to accelerate a rocket from rest to C, the energy needed to accelerate that…

A: Solution: Given: (1) If it requires energy U to accelerate a rocket from rest to (1/2) c, the energy…

Q: A golfer drives (hits) a golf ball off of a tee at a speed of 30 m/s. The mass of the golf ball is…

Q: (a) Suppose a star is 7.61 ✕ 1018 m from Earth. Imagine a pulse of radio waves is emitted toward…

A: Speed of electromagnetic wave is, C = 3×108 m/s (a) Distance of the star from earth, S = 7.61 ✕ 1018…

Q: The drawing shows a coil of copper wire that consists of two semicircles joined by straight sections…

A: We know that emf induced due to change in magnetic flux(Faraday's Law) is given as ξ=-dϕ/dt…

Q: A roller coaster cart of mass 139.0 kg is pushed against a launcher spring with spring constant…

Q: Water (density = 1000 kg/m3) flows through a fire hose with a velocity of 5.0 m/s and a pressure of…

Q: When a particle of charge qqq moves with a velocity v⃗ v→v_vec in a magnetic field B⃗ B→B_vec, the…

A: This problem is related to megnetic feild effect.

Q: Block A (mA = 2 kg) is initially at rest on top of block B as shown. Atlas moves block B from rest…

Q: After feeding, an arctic tern is flying back to its nest at 24km/h for 72 kilometres. It then starts…

Q: The switch is initially at state 1, the capacitor is initially uncharged, and the circuit has an…

Q: What is impulse, momentum and energy in collisions with applications

Q: A chain lying on the ground is 10 m long and its mass is 60 kg. How much work (in J) is required to…

Q: Problem 1: A cell phone battery uses chemistry to create a charge separation between the terminals…

A: Given: Q = capacity of the battery To be determined: N = Number of free electrons content by the…

Q: A light ray travels from air, through a tw = 2.00 mm thick layer of water, through a tg 5.00 mm…

A: in this question we snell's law for answer.

Q: Light from a medium with index of refraction n₁=1.22 passes into a medium with index of refraction…

Q: A particular electronic-code lock provides over 500 billion combinations. Moreover, it can sustain…

Q: semicircle rotates is 1.4 rad/s. Determine the average current I, if any, induced in the coil as the…

Q: The cyclotron at TRIUMF accelerates protons from a central injection point outward along an…

A: Solution: Given: The figure shows the direction of protons after coming out of the Dee of cyclotron.…

Q: Please check if these question is correct

Q: A truck’s tare weight was 1750kg. At a weighing station the scales read 6.32 tonnes. What was the…

Q: what would the web strength be if there was a car with mass of 2000 kg falling off of a bridge for…

Q: Two messes are Connected by a pulley. A is 5 kg and B is 15 kg. Friction between B A and the…

Q: A positively-charged object with a mass of 0.183 kg oscillates at the end of a spring, generating…

Q: 4. What charge appears on the plates of a 2.0-mF capacitor when it is charged to 100 V? A) 50 mC B)…

A: Given capacitance(C)=2.0 mF Charge(Q)=100 V Required Charge(Q)

Q: A resistor and capacitor are connected in series across an ac generator. The emf of the generator is…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: The International Space Station (ISS) orbits the Earth in a nearly circular orbit that is 345 km…

A: "Since you have asked multiple question, we will solve first three question for you. If you want any…

Q: explain why the Stellar Classification Sequence is not in alphabetical order

A: Stellar Classification:- Stellar classification in astronomy is the categorizing of stars according…

Q: "A capacitor consists of two parallel conducting plates, each of area 0.4 m² and separated by a…

A: Given: A = area of plates = 0.4 m2 d = separation of plates = 2.0 cm k = dielectric constant = 1.5…

Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

6. A light bulb having resistance of 100 draws 200Ma current form a battery.
a) Find the voltage supplied by the battery
b) If the battery becomes weak and voltage drop to 0.85V/ how much would the current
change

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A car battery with a 12-V emf and an internal resistance of 0.050 is being charged with a current of 60 A. Note that in this process the battery is being charged. (a) What is the potential difference across its terminals? (b) At what rate is thermal energy being dissipated in the battery? (c) At what rate is electric energy being converted to chemical energy? (d) What are the answers to (a) and (b) when the battery is used to supply 60 A to the starter motor?
Integrated Concepts A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300 kcal/kg. °C, assuming no heat escapes?
A typical cell phone consumes an average of about 1.00 W of electrical power and operates on 3.80 V. (a) What average current does the phone draw from its battery? (b) Calculate the energy stored in a fully charged battery if the phone requires charging after 5.00 hours of use.
A typical cell phone consumes an average of about 1.00 W of electrical power and operates on 3.80 V. (a) What average current does the phone draw from its battery? (b) Calculate the energy stored in a fully charged battery if the phone requires charging after 5.00 hours of use.
Currents of approximately 0.06 A can be potentially fatal. Currents in that range can make the heart fibrillate (beat in an uncontrolled manner). The resistance of a dry human body can be approximately 100 k . (a) What voltage can cause 0.06 A through a dry human body? (b) When a human body is wet, the resistance can fall to 100 . What voltage can cause harm to a wet body?
Consider the circuit below. The battery has an emf of = 30.00 V and an internal resistance of r = 1,00 . (a) Find the equivalent resistance of the circuit and the current out of the battery. (b) Find the current through each resistor, (c) Find die potential drop across each resistor, (d) Find the power dissipated by each resistor, (e) Find the total power supplied by the batteries.
Three identical 60.0-W, 120-V lightbulbs are connected across a 120-V power source as shown in Figure P28.72. Assuming the resistance of each lightbulb is constant (even though in reality the resistance might increase markedly with current), find (a) the total power supplied by the power source and (b) the potential difference across each lightbulb.
A 20.00-ohm; 5.00-watt resistor is placed in series with a power supply, (a) What is the maxim tun voltage that can be applied to the resistor without hanniug the resistor? (b) What would be the current through the resistor?
If electrical energy costs 0.12 per kilowatt-hour, how much does it cost to (a) burn a 100-W lightbulb for 24 h? (b) Operate an electric oven for 5.0 h if it carries a current of 20.0 A at 220 V?
(a) A defibrillator sends a 6.00-A current through the chest of a patient by applying a 10,000-V potential as in the figure below. What is the resistance of the path? (b) The defibrillator paddles make contact with the patient through a conducting gel that greatly reduces the path resistance. Discuss the difficulties that would ensue if a larger voltage were used to produce the same current through the patient, but with the path having perhaps 50 times the resistance. (Hint: The current must be about the same, so a higher voltage would imply greater power. Use this equation for power: P=I2 RP = .)
. An electric car is being designed to have an average power output of 4,000 W for 2 h before needing to be recharged. (Assume there is no wasted energy.) (a) How much energy would be stored in the charged batteries? (b) The batteries operate on 30 V. What would the current be when they are operating at 4,000 W? (c) To be able to recharge the batteries in 1 h, how much power would have to be supplied to them?
A Van de Graaff generator is one of the original particle accelerators and can be used to accelerate charged particles like protons or electrons. You may have seen it used to make human hair stand on end or produce large sparks. One application of the Van de Graaff generator is to create X-rays by bombarding a hard metal target with the beam. Consider a beam of protons at 1.00 keV and a current of 5.00 mA produced by the generator, (a) What is the speed of the protons? (b) How many protons are produced each second?