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Ohm's Law
A resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange, orange, silver?
2 mA
2.2 mA
214 mA
21.4 mA
2 mA
2.2 mA
214 mA
21.4 mA
Answer
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Related Question
Ohm's Law
How much voltage is needed to produce 2.5 A of current through a 200 resistor?
8 V
80 V
500 V
50 V
8 V
80 V
500 V
50 V
Answer
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Ohm's Law
What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source?
23
97
230
9.7
23
97
230
9.7
Answer
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Ohm's Law
Twelve volts are applied across a resistor. A current of 3 mA is measured. What is the value of the resistor?
4 k
4
400
4.4
4 k
4
400
4.4
Answer
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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?
8 V
96 V
960 V
9.6 V
8 V
96 V
960 V
9.6 V
Answer
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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.
20
4
40
2
20
4
40
2
Answer
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