Does the emf induced by a changing magnetic flux depend on the resistance of the circuit?...

Does the emf induced by a changing magnetic flux depend on the resistance of the circuit?
A plastic frisbee is fitted with a metal ring around its rim. If the frisbee is thrown, does the Earth's magnetic field induce an emf? Explain.
Suppose that the frisbee in question # 3 is thrown so that it tumbles. In this case does the Earth's magnetic field induce an emf? Explain.
At the equator, the direction of the Earth's magnetic field is north. Suppose you are at the equator, driving north in our car. If you make a turn, will there be an induced current in the metal loop that frames your windshield?
What is the direction of the induced current in the loop in question # 5 (clockwise or counterclockwise from your perspective)?

Solutions

Expert Solution

1) no , EMF induced by changing magnetic flux does not depends upon the resistance of the circuit and instead it depends upon the area of the conducting loop (circuit ) and the rate of change of magnetic field and the orientation of the circuit.

2) know the earth's magnetic field does not induce an EMF in plastic frisbee fitted with a metal ring around its rim because neither the magnetic field, the area or the orientation of frisbee change and hence there is no change of flux and Ultimately no EMF is induced.

3) yes the EMF will be induced in this case because when the frisbee tumbles then the angle between the area vector of the frisbee and the magnetic field of the earth changes which means that the flux is being changed and this ultimately results in the the induction of EMF.

4,5) yes the EMF will be induced in this case and the direction of induced EMF or induced current will be clockwise.

Please ask your doubts or queries in the comment section below.

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Thank you.

genius_generous answered 1 year ago

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