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A very long solenoid (axis along z-direction) of n turns per unit length carries a current that increases linearly with time,
A very long solenoid (axis along z-direction) of n turns per unit length carries a current that increases linearly with time,
A very long solenoid (axis along z-direction) of n turns per unit length carries a current that increases linearly with time,
Physics INK
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Problem: A very long solenoid (axis along z-direction) of n turns per unit length carries a current that increases linearly with time,
(A)
Answer:
The magnetic field of a long solenoid at any instant t is given by
so,
Option (A) is correct.
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