Question

two concentric circular coil A and B have radii 25cm and 15 cm. and carrying current 10A and 15A respectively A has 24 turns B has 18 direction ofcurrent is in opposite order. The magnetic induction at the common centre of the coil will be

Answer 1

Answer:

ANSWER

B

1

=

2r

1

n

1

μ

0

i

1

=

2×25×10

−2

24×μ

0

×10

=480μ

0

T going into the plane

B

2

=

2r

2

n

2

μ

0

i

2

=

2×15×10

−2

18×μ

0

×15

=900μ

0

T going out of the plane

Bnet=B

2

−B

1

=(900−480)μ

0

=420μ

0

T

Explanation:

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