Question

A force of 8N acts on a rectangular conductor 20 cm long placed perpendicular to a magnetic field. determine the magnetic field induction if the current in the conductor is 40A ​

Answer 1

Given that,

Magnetic force = 8 N

Length of conductor = 20 cm

Current in conductor = 40 A

We need to calculate the magnetic field induction

Using formula of magnetic force

$F=BIL$

$B = \dfrac{F}{IL}$

Where, B = magnetic field

F = magnetic force

I = current

L = length  

Put the value into the formula

$B=\dfrac{8}{40\times20\times10^{-2}}$

$B=1\ Tesla$

Hence, The magnetic field induction is 1 Tesla.