ENGINEERING

VOLTAGE QUESTION

A 72-ohm coil of wire is connected in series with an adjustable resistor (rheostat) whose resistance can be varied from 0 to 88 ohms. If the line potential of wire is 115 volts, what is the rheostat resistance when power taken by the coil is 90 watts?

SOLUTION

72 OHMS is too much for a wire coil. The seventy-two OHMS is more realistic but the resistance hardly uses a real power. This reactance uses power that’s apparent only. To get the solution I will thus work on this….(In need this answer in full or a new one? Please fill the form below or send a message/order ; Code 002).

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