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Ohm's Law

Ohm's Law
How much current is produced by a voltage of 18 kV across a 15 k resistance?

12 mA
12 A
1.2 A
120 mA

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Ohm's Law
Four amperes of current are measured through a 24 resistor connected across a voltage source. How much voltage does the source produce?

96 V
8 V
9.6 V
960 V

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Ohm's Law
If you wish to increase the amount of current in a resistor from 120 mA to 160 mA by changing the 24 V source, what should the new voltage setting be?

32 V
8 V
320 V
3.2 V

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Ohm's Law
The formula to find I when the values of V and R are known is

I = V/R
V = IR
I = VR
I = R/V

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Ohm's Law
Twelve volts are applied across a resistor. A current of 3 mA is measured. What is the value of the resistor?

4
4.4
4 k
400

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Ohm's Law
The current through a flashlight bulb is 40 mA and the total battery voltage is 4.5 V. The resistance of the bulb is approximately

1.2
18
11.2
112

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