0.000 s

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5/31 MCQs for:
Electromagnetism
If the inductance and the capacitance both double in an LRC series circuit, the resonant frequency of that circuit will:

A horizontal metal bar that is 2.0 m long rotates at a constant angular velocity of 2.0 rad/s about a vertical axis through one of its ends while in a constant magnetic field of 5.0 x 10-5 T. If the magnetic field vector points straight down, what emf is induced between the two ends of the bar?

The coil of a generator has 50 loops and a cross-sectional area of 0.25 m2. What is the maximum emf generated by this generator if it is spinning with an angular velocity of 4.0 rad/s in a 2.0 T magnetic field?
Suppose that you wish to construct a simple AC generator with an output of 12 V maximum when rotated at 60 Hz. A magnetic field of 0.050 T is available. If the area of the rotating coil is 100 cm2, how many turns are needed?
A flux of 4.0 ? 10-5 Wb is maintained through a coil for 0.50 s. What emf is induced in this coil by this flux?