Science, asked by neeraj1616as, 2 months ago

How does the strength of the magnetic field at the centre of a circular coil of a wire carrying current, change when: a) its radius is increased keeping current constant b) the current is decreased keeping radius

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Answered by sahananeel07

Answer: At the center of a current carrying coil, the magnetic field intensity is directly proportional to the current and inversely proportional to the radius of the coil. So, if the current is doubled and radius is halved, then the value of B increases by 4 times the initial value.

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