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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?

9 A
90 A
9000 A
900 A

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Ohm's Law
How much voltage is needed to produce 2.5 A of current through a 200 resistor?

8 V
50 V
500 V
80 V

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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

385
3.1
31
38.5

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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?

9.6 V
96 V
960 V
8 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?

7.2 V
1.8 V
18 V
72 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.

40
4
2
20

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