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Ohm's Law

Ohm's Law
What is the voltage source for a circuit carrying 2 A of current through a 36 resistor?

72 V
1.8 V
18 V
7.2 V

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

12 A
12 mA
1.2 A
120 mA

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Ohm's Law
You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?

9 V
900 mV
18 V
0 V

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Ohm's Law
What is the approximate resistance of a rheostat if the voltage source is 18 V and the current is 220 mA?

82
8.2
820
8.2 k

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Ohm's Law
An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately

3.1
385
38.5
31

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Ohm's Law
When there is 12 mA of current through a 1.2 k resistor, the voltage across the resistor is

10 V
1.4 V
100 V
14.4 V

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