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What is the magnetic induction at the ce...

What is the magnetic induction at the centre of a circular coil of 10 turns, each of radius 5 cm and carrying a current of 5 A ?

A

`4.5xx10^(-4) Wb//m^(2)`

B

`5.2xx10^(-4) Wb//m^(2)`

C

`6.284xx10^(-4)Wb//m^(2)`

D

`8.45xx10^(-4)Wb//m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`B=(mu_(0))/(4pi) ((2pi nI)/(r))=(10^(-7) xx2ccxx3.142 xx10xx5)/(5xx10^(-2))`
`therefore B =6.284xx10^(-4)Wb//m^(2)`
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