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A uniform wire of resistance 12Omega is ...

A uniform wire of resistance `12Omega` is bent in the form of a square. A cell of `emf6V` having negligible innternal resistance connected across the diagonal of the square. The magnetic induction at its centre `(` in tesla `)`.

A

0

B

`10^(-7)`

C

`5xx10^(-7)`

D

`(mu_(0))/(4pi)xx5xx10^(-7)`

Text Solution

Verified by Experts

The correct Answer is:
1
`B_(1)=(mu_(0)i)/(4pir)(sintheta_(1)+sintheta_(2))`
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