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Ohm's Law
You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?
0 V
9 V
900 mV
18 V
0 V
9 V
900 mV
18 V
Answer
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Related Question
Ohm's Law
If 24 V are applied across a resistor and there are 10.9 mA of current, the resistance is
2.2 k
220 k
220
22 k
2.2 k
220 k
220
22 k
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
820
8.2 k
82
8.2
820
8.2 k
82
Answer
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Ohm's Law
How much resistance is needed to draw 17.6 mA from a 12 volt source?
680
68
212
6.8 k
680
68
212
6.8 k
Answer
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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
660 mA
151 µA
15.1 µA
66 mA
660 mA
151 µA
15.1 µA
66 mA
Answer
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Ohm's Law
A current of 200 µA through a 6.8 k resistor produces a voltage drop of
34.4 V
13.6 V
340 V
1.36 V
34.4 V
13.6 V
340 V
1.36 V
Answer
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