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Ohm's Law

Ohm's Law
Approximately how much current flows through a 3.3 M resistor across a 30 V source?

900 A
9000 A
9 A
90 A

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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
A resistance of 3.3 M is connected across a 500 V source. The resulting current is approximately

66 mA
15.1 µA
660 mA
151 µA

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

340 V
34.4 V
13.6 V
1.36 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
How much voltage is needed to produce 2.5 A of current through a 200 resistor?

50 V
80 V
8 V
500 V

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