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Ohm's Law

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

38.5
385
31
3.1

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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
960 V
9.6 V
8 V

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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
9.7
23
230

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Ohm's Law
How much resistance is required to limit the current from a 12 V battery to 3.6 mA?

2.2 k
3.3 k
22 k
33 k

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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
1.4 V
10 V
100 V

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

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

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