Multiple Choice
An ac generator consists of a coil with 50 turns of wire, each with an area of 0.02 m2. The coil rotates in a uniform magnetic field B = 0.4 T at a constant frequency of 60 Hz and produces an average power of 50 W. What is the resistance of the coil?
A) 150 Ω
B) 85 Ω
C) 2.4 Ω
D) 53 Ω
E) 227 Ω
Correct Answer:

Verified
Correct Answer:
Verified
Q74: FIGURE 29-7 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3817/.jpg" alt="FIGURE 29-7
Q75: FIGURE 29-11 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3817/.jpg" alt="FIGURE 29-11
Q76: A circular loop of radius 0.10 m
Q77: A conducting bar slides without friction on
Q78: A square wire, 20 cm on the
Q80: A transformer for charging a power tool
Q81: Explain what happens when the angular speed
Q83: FIGURE 29-12 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3817/.jpg" alt="FIGURE 29-12
Q84: A long straight wire lies on a
Q98: A conducting loop in the form of