Number of CellsUsed1234Voltage across Resistor(V)1.453.004.546.1Current in Resistor (A)0.090.170.240.31Calculated Resistance(12)16.117.618.919.7A) What happens to the voltage across a resistor when the number of cells in series with it is(a) doubled? (b) tripled? (c) quadrupled?B) What happens to the current across a resistor when the number of cells in series with it is(a) doubled? (b) tripled? (c) quadrupled?C) What happens to the resistance (R = V/I) across a resistor when the number of cells in series with it is(a) doubled? (b) tripled? (c) quadrupled?

All of the parts of a series circuit are wired together end to end to create a single path for…

2 3 4 3.00 4.54 6.1 0.17 0.24 0.31 17.6 18.9 19.7 What happens to the voltage across a resistor when the number of cells in series with it is (a) doubled? (b) tripled? (c) quadrupled? 3) What happens to the current across a resistor when the number of cells in series with it is (a) doubled? (b) tripled? (c) quadrupled? What happens to the resistance (R = V/I) across a resistor when the number of cells in series with it (a) doubled? (b) tripled? (c) quadrupled?

2 3 4 3.00 4.54 6.1 0.17 0.24 0.31 17.6 18.9 19.7 What happens to the voltage across a resistor when the number of cells in series with it is (a) doubled? (b) tripled? (c) quadrupled? 3) What happens to the current across a resistor when the number of cells in series with it is (a) doubled? (b) tripled? (c) quadrupled? What happens to the resistance (R = V/I) across a resistor when the number of cells in series with it (a) doubled? (b) tripled? (c) quadrupled?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 69AP: Consider the circuit below. The battery has an emf of = 30.00 V and an internal resistance of r =...

See similar textbooks

Similar questions

The- pair of capacitors in Figure P28.63 are fully charged by a 12.0-V battery. The battery is disconnected, and the switch is then closed. Alter 1.00 ms has elapsed, (a) how much charge remains 011 the 3.00-F capacitor? (b) How much charge remains on the 2.00-F capacitor? (c) What is the current in the resistor at this time?
Lightbulb A is marked 25.0 W 120. V, and lightbulb B is marked 100. W 120. V. These labels mean that each lightbulb has its respective power delivered to it when it is connected to a constant 120.-V source. (a) Find the resistance of each lightbulb. (b) During what time interval does 1.00 C pass into lightbulb A? (c) Is this charge different upon its exit versus its entry into the lightbulb? Explain. (d) In what time interval does 1.00 J pass into lightbulb A? (e) By what mechanisms does this energy enter and exit the lightbulb? Explain. (f) Find the cost of running lightbulb A continuously for 30.0 days, assuming the electric company sells its product at 0.110 per kWh.
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?
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.
Semi-truck or trucks use four large 12-V batteries. The starter systemrequires 24 V, while normal operation of the truck’s other electrical components utilizes 12 V. How could the four batteries be connected to produce 24 V? To produce 12 V? Why is 24 V better than 12 V for starting the truck’s engine (a very heavy load)?
Review. When a straight wire is warmed, its resistance is given by R = R0,[1 + a(T T0)] according to Equation 27.20, where a is the temperature coefficient of resistivity. This expression needs to be modified if we include the change in dimensions of the wire due to thermal expansion. For a copper wire of radius 0.100 0 mm and length 2.000 m, find its resistance at 100.0C, including the effects of both thermal expansion and temperature variation of resistivity. Assume the coefficients are known to four significant figures.
Figure 21.55 shows how a bleeder resistor is used to discharge a capacitor after an electronic device is shut off allowing a person to work on the electronics with less risk of shock, (a) What is the time constant? (b) How long will it take to reduce the voltage on the capacitor to 0.250% (5% of 5%) of its full value once discharge begins? (c) If the capacitor is charged to a voltage V0through a 100-O resistance, calculate the time it takes to rise to 0.865V0(This is about two time constants.)
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.
R1 R2 R3
Te-Learning Portal Courses - Reports e-Services ▼ Academic Departments - ETC - CIMS Salim During an experiment to verify Ohm's law, the voltage supplied and the current through a circuit are measured. [Voltage is measured in Volt (V) and current in Ampere (A)]. ww R on Battery The measured value of the current is I = 3.1 ± 0.2 A and that of the voltage is V = 14 0.5 V. The resistance of the circuit (in N) can be calculated using the formula, R = V/I, Calculate the, a) Resistance (in 2) = b) Fractional uncertainty in the resistance = c) Absolute uncertainty (in 2) in the resistance=
2. An external resistor with resistance R is connected to a battery that has emf & and internal resistance r. Let P be the electrical power output of the battery. By conservation of energy, P is equal to the power delivered to the external resistor. r E ww*|- R (a) Find P in terms of E, r, and R. (b) If ε = 40 V and r = 2 2, calculate the power delivered to the external resistor for six different values of R: 0.25 Ω, 1 Ω, 1.75 Ω, 2.5 Ω, 3.25 Ω, and 4 Ω. (c) In Part (b), you should have found that P does not increase monotonically as R increases. Using the equation for P from Part (a), find the value of R in terms of r such that P is maximized. What is the maximum value of P in terms of & and r?
2o2 3052 352 552 652 2A A. The power dissipated in the 3 Ohms resistor is W. B. The total voltage is V. C. The power dissipated in the 5 Ohms resistor is W. Round all answers to whole numbers.