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Ohm's Law

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

8.2 k
82
8.2
820

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

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

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Ohm's Law
What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source?

97
23
9.7
230

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Ohm's Law
A current of 200 µA through a 6.8 k resistor produces a voltage drop of

1.36 V
13.6 V
340 V
34.4 V

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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

14.4 V
100 V
1.4 V
10 V

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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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