3. A 692 and a 120 resistor are connected in series with a 36 volt battery,. How many Joules per second are dissipated by the 129 resistor. A. 14 watts B. 24 watts C. 48 watts D. 64 watts
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Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
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- It/metér 542.200-watt electric stove operates on a 220 volt line. What current passes through the electric stove? a.1.0 A b.5.0 A C.10 A d.100 A 6. What is the resistance of the electric stove in the preceding problem? a.220 0 b.22 0 7. What is the value of a resistor color coded as red-orange-black-silver? a. 230 n /-10% b. 23 0-/-10% C. 340 0/-10% d. 34 0+/-10% C.10 0 d.2.2 0An uncharged capacitor and a resistor are connected in series to a battery. If & = 9.00 V, C = 20 μF, and R = 2 Mº. a. Find the time constant of the circuit. b. Find the voltage across the resistor at the moment the switch is closed. c. The maximum charge on the capacitor. d. The voltage across the resistor 20 seconds after the switch is closed. e. The time it takes the capacitor to be 50% charged.7.) Suppose 10 mA of current is flowing through an electrical circuit. How many Amperes are flowing in the circuit? a. None of these b. 0.1 A c. 0.001 A d. 0.01 A 19.) If 1.5 volts (DC) is applied across a resistor and 200 mA of current is flowing through the resistor, how much power is dissipated by the resistor? a. None of these b. 300 W c. 0.3 W d. 30 W 20.) If 24 volts is dropped across a resistor and the resistors value is 1.2 kΩ, how much current is flowing through the resistor? a. 0.02 A b. None of these c. 20 A d. 0.2 A
- 3. A coffee-maker (142) and a toaster (192) are connected in parallel to the same 120-V outlet in a kitchen. How much total power is supplied to the two appliances when both are turned on? a. 1.2x105w b. 2.2x105w c. 3.2x105w d. 4.2x105w 4. A 16-N loudspeaker, an 8.0-2 loudspeaker, and a 4.0-N loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers, assuming that they all behave as resistors. а. О.340 b. 0.442 c. 0.542 d. 0.642 5. A 60.0-W lamp is placed in series with a resistor and a 120.0-V source. If the voltage across the lamp is 25 V, what is the resistance R of the resistor? а. 1.0х10'0 b. 2.0x10'n c. 3.0x10'n d. 4.0x10'nA 660 W electric heater is designed to operate from a 120 V source. If the source voltage drops to 80.0 V, what will be the power dissipated by the same heater? (Assume the resistance of the heater is constant.) a. 440 W b. 660 W c. 293 W d. 73.3 WAn uncharged capacitor and a resistor are connected in series to a battery. If ε = 9.00 V, C = 20 μF, and R = 2 MS. a. Find the time constant of the circuit. b. Find the voltage across the resistor at the moment the switch is closed. c. The maximum charge on the capacitor. d. The voltage across the resistor 20 seconds after the switch is closed. e. The time it takes the capacitor to be 50% charged.
- 6. The sticker on an appliance states that it draws 288 mA of current when powered by a 9 Volt battery. What is the power (in Watts) of the appliance? a. 2.59 W b. 2.59 mW c. 2.59 W d. 2592 W 7. An 800 W toaster is connected to a 220 V household outlet. What is the resistance of the toaster? a. 0.275 2 b. 3.63 2 c. 60.5 2 d. 2909 2 8. A gadget uses a standard 1.5 V battery. How much resistance is in the circuit if it uses a current of 0.01A a. 0.015 2 b. 6.67 m2 c. 150 2 d. 150 ka 9. What is the power dissipated in a 102 resistor if the current through it is 2A? R=102 a. 0.2 W b. 5 W i=2A c. 20 W d. 40 W 10. What is the current through a 1002 resistor of the following circuit that has a potential drop of 20 V across it? 20V a. 0.2 A b. 4 A R=1002 i c. 5 A d. 50 A7. If one of the resistors in a parallel circuit is removed, the total resistance A. doubles B. increases C. decreases D. remains the same 8. Three 10k resistors are connected in series. A 20k resistor is connected in parallel across one of the 10k resistors. The voltage source is 24 V. The total current in the circuit is A. 900 µ A B. 9 mA C. 90 mA D. 800 μΑ _9. The algebraic sum of voltages around any closed path in a network is equal to A. infinity 10. Relation between currents according to KCL is В. 1 C. O D. negative polarity A. I;= l2 = l3 = 14 =ls B. I,+ la + l3 =ls+ l2 C. I- Is = 12 - 13 - l4 D. I,+ Is = 12 + l3 + l4A power supply with a DC voltage of 5.0 V discharges 500.0 J of energy through a 25 Ohm resistor. How much total electric charge must flow between the battery's terminals to discharge this much energy? a. 0.05 C b. 0.01 C c. 100 C d. 0.2 C e. 2500 C
- A1. A 110-Ω electric fan is connected to an electric outlet which has avoltage of 220 V. How much power does the 110-Ω electric fangenerated?a. 420 W b. 430 W c. 440 W d. 450 WA2. What instrument is used to measure the current?a. Voltmeter b. Ohmmeter c. Galvanometer d. Ammeter A3. An electric blanket is connected to a 120-V outlet and consumes 140 W of power. What is the resistance of the heater wire in the blanket?a. 2.0?106Ω b. 3.0?106Ω c. 4.0?106Ω d. 5.0?106ΩQuestion Completion Status: QUESTION 1 What happens to the amount of current running through a circuit if you increase the RESISTANCE of the circuit? Oa. decreases Ob. none of these OC. no change Od.jncreases QUESTION 2 You are looking at two batteries, the first has a voltage of 1.5 volts while the second has a voltage of 24 volts. Which battery will supply a greater current flow when connected to a 4 ohm resistor? a. O volt battery Ob. 24 volt battery Oc. 1.5 volt battery Od. None of these QUESTION 3 What is the current travelling through a 25.5 ohm resistor if there is a 9 volt battery connected to it? a. 0.343 amps b.2.833 amps OC. 4 amps d. 230 amps Click Save and Submit to save and submit. Click Save All Answers to save all answers.An 18.0 ohm , 9.00 ohm. and 6.00 ohm resistor are connected in a series with an emf source. The current in the 9.00 ohm resistor is measured to be 4.00 A. a. Calculate the equivalent resistance of the three resistors in the circuit. b. Find the potential difference across the emf source. c. Find the current in the other resistors. Thank you for your help