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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
38.5
3.1
385
31
38.5
3.1
385
31
Answer
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Related Question
Ohm's Law
What is the voltage source for a circuit carrying 2 A of current through a 36 resistor?
1.8 V
18 V
7.2 V
72 V
1.8 V
18 V
7.2 V
72 V
Answer
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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
I = R/V
V = IR
I = V/R
I = VR
Answer
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Ohm's Law
What is the approximate resistance of a rheostat if the voltage source is 18 V and the current is 220 mA?
8.2 k
82
8.2
820
8.2 k
82
8.2
820
Answer
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Ohm's Law
How much resistance is needed to draw 17.6 mA from a 12 volt source?
6.8 k
680
68
212
6.8 k
680
68
212
Answer
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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
11.2
112
18
1.2
11.2
112
18
1.2
Answer
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