Princeton University Engineering Worksheet
- January 31, 2022/ Homework Tutors
Question Description
I don’t know how to handle this Engineering question and need guidance.
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?