If in a circular coil A of radius R , current i is flowing and in another coil B of radius 2 R , a current 2 i is flowing, then the ratio of the magnetic fields, B A and B B produced by them will be

Question

If in a circular coil A of radius R , current i is flowing and in another coil B of radius 2 R , a current 2 i is flowing, then the ratio of the magnetic fields, B A and B B produced by them will be, 1, 2, 1 2, 4

MARKS App · Accepted Answer

Magnetic field in circular coil A is Similarly, B A = μ 0 N i 2 R R is radius and i is current flowing in coil. B B = μ 0 N ( 2 i ) 2 . ( 2 R ) = μ 0 N i 2 R B A B B = 1 1 = 1

Search any question & find its solution

Looking for more such questions to practice?