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Ohm's Law

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

230
97
23
9.7

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Ohm's Law
If 750 µA is flowing through 11 k of resistance, what is the voltage drop across the resistor?

8.25 V
146 V
82.5 V
14.6 V

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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?

22 k
33 k
2.2 k
3.3 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

10 V
14.4 V
1.4 V
100 V

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Ohm's Law
A 120 V lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 20 ohms.

4
20
2
40

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Ohm's Law
When 12 V are applied across a 68 resistor, the current is

816 mA
17.6 mA
8.16 mA
176 mA

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