A circular current carrying coil has a radius R . The distance from the centre of the coil on the axis, where the magnetic induction will be 1 8 th to its value at the centre of the coil is

Question

A circular current carrying coil has a radius R . The distance from the centre of the coil on the axis, where the magnetic induction will be 1 8 th to its value at the centre of the coil is, R 3, R 3, 2 3 R, 2 3 R

MARKS App · Accepted Answer

B c e n t r e B a x i s = 1 + x 2 R 3 2 B a x i s = 1 8 B c e n t r e 8 1 = 1 + x 2 R 2 3 2 4 = 1 + x 2 R 2 3 = x 2 R 2 x 2 = 3 R 2 x = 3 R

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