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Ohm's Law

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

8.16 mA
176 mA
816 mA
17.6 mA

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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
960 V
96 V
8 V

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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
8 V
80 V
500 V

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Ohm's Law
How much current is produced by a voltage of 18 kV across a 15 k resistance?

120 mA
1.2 A
12 A
12 mA

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Ohm's Law
The current through a flashlight bulb is 40 mA and the total battery voltage is 4.5 V. The resistance of the bulb is approximately

1.2
11.2
112
18

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

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

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