Question

7.
The magnitude of magnetic field induction at the
centre o in the figure shown is (Given: R =
10 cm, R2 = 20 cm and i 1 amp​

Answer 1

Answer:

R1 = 10cm

R2= 20cm

I = 1ampere

FIND-

magnetic field intensity at centre o of the figure .

Solve-

magnetic field intensity will be contributed only by semi circular portion off the figure because the access state via pass through the centre and hence will contribute zero field intensity .

Solving:

I am doing it in simple way

X= 10 cm ,20cm , 1 A

= 30 Cm + 1 A

so diameter is = 30 cm

R = 2 CM

30 CM = 2 × 22 × 1 a

=7

= 44 ÷ 7 = 6.28

So answer is 6.28

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