A load that has a resistance of 10 ohms is to be connected to a supply that has a constant voltage of 120 volts. If it is desired that the currrent to the load be varied from 3 to 5 amperes, what are the resistance and the current rating of the series rheostat that permit this variation?

A load that has a resistance of 10 ohms is to be connected to a supply

1.	A load that has a resistance of 10 ohms is to be connected to a supply that has a constant voltage of 120 volts. If it is desired that the currrent to the load be varied from 3 to 5 amperes, what are the resistance and the current rating of the series rheostat that permit this variation?
A.	30 ohms, 5A
B.	10 ohms, 10A
C.	20 ohms, 10A
D.	20 ohms, 10A
Answer» B. 10 ohms, 10A

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A load that has a resistance of 10 ohms is to be connected to a supply that has a constant voltage of 120 volts. If it is desired that the currrent to the load be varied from 3 to 5 amperes, what are the resistance and the current rating of the series rheostat that permit this variation?

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