Eddy currents are produced when [1988]a)a metal is kept in varying magnetic fieldb)a metal is kept in steady magnetic fieldc)a circular coil is placed in a magnetic fieldd)through a circular coil, current is passedCorrect answer is option 'A'. Can you explain this answer?

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Eddy currents are produced when [1988]

a)
a metal is kept in varying magnetic field
b)
a metal is kept in steady magnetic field
c)
a circular coil is placed in a magnetic field
d)
through a circular coil, current is passed

Correct answer is option 'A'. Can you explain this answer?

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Eddy currents are produced when [1988]a)a metal is kept in varying mag...

Eddy currents are produced when a metal is
kept in a varying magnetic field.

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Magnitude of magnetic field due to a circular loop carrying current at its centre is B. If radius and current flowing through the loop are doubled,then new magnetic field at the centre will be A. B/2 B. 2B C. B D. 4B ? The answer is D plz explain.?

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Eddy currents are produced when [1988]a)a metal is kept in varying magnetic fieldb)a metal is kept in steady magnetic fieldc)a circular coil is placed in a magnetic fieldd)through a circular coil, current is passedCorrect answer is option 'A'. Can you explain this answer?

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