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The average radius of an air cored made ...

The average radius of an air cored made toroid is 0.1 m and it has 500 turns. If it carries 0.5 ampere current, then the magnetic field inside it is :

A

(a)`2.5 xx 10^(-4)`

B

(b)` 5 xx 10^(-3)`

C

(c)` 5 xx 10^(-2)`

D

(d)`2 xx 10^(-3)`

Text Solution

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The correct Answer is:
A
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