Download Ohm`s Law Worksheet

Ohm’s Law Worksheet
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Name________________
Date _________
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1. The rate of electron flow is measured in (a) amperes (b) volts (c) ohms.
2. One amp is one ________________ per second. A coulomb is __________________
electrons.
3. A _______________ is the electric pressure required to produce one ampere of
current in a circuit having one ____________ of resistance.
4. Electric pressure (E) is measured in _______________ (____): the rate of electron
flow (____) is measured in amps (_____), the ________________ (R) is measured in
ohms (_____).
5. In a circuit, voltage and current are (a) directly proportional, (b) inversely proportional,
(c) not proportional.
6. According to Ohm’s Law, what effect will cutting the resistance have on the current?
7. If the voltage stays the same and the resistance is ¼ of its original, what will happen to
the current?
8. Using your equation for Ohm’s Law, answer the following. Current equals __________
divided by _____________.
9. If the power source is set at 6V and R is 2 ohms, the current =___________
10. V=5volts, R= 10 ohms, I= ____________.
11. Voltage = ____________ times_____________.
12. If the current in the circuit is 7 amps and the resistance is 2 ohms the voltage
=___________.
13. R = 30 ohms, I = 3A, V=__________
14. Resistance= ______________ divided by _____________.
15. If the power source is 12 V and the flow of electrons is 3A, what is the resistance?
16. V= 6V, I= 18A, R=__________
17. A current of 3.7 amps is running through a circuit like the one above with a resistance
of 1.5 ohms. What is the voltage?
18. If the current in the circuit above is 10 amps and the resistance is 3 ohms, what is
the voltage?
19. If the battery in the circuit above is 24 V and the resistance is 12 ohms, what is the
current, I?
20. Given a voltage of 120 volts and a current of 5 amps, what is the resistance?
21. Given a resistance of 1500 ohms and a current on 0.03 amps, what’s the voltage?
22. Resistance is 200 ohms and voltage is 24 V. Find I.
23. Battery potential is 12 volts and current is 2.7 amps. What’s the resistance?
24. House current is 120 volts. If a light bulb runs a current of 0.5 amps, what’s the
resistance of the bulb?
25. Your car battery is a 12 V DC source. Typically you might find a fuse that can handle
a 5 amp surge. What resistance is that fuse protecting?
26. You might have a flashlight that runs (2) D-cells of 1.5 volts each in series. The bulb
is rated for 0.7 amps. What’s its resistance?