Question

The magnetic induction field due to a magnetic north pole of strength 10Am and 5cm away from the pole in webre/m2 is.

Answer 1

Answer:

The magnetic induction field due to a magnetic north pole of strength 10am and 5cm away fr. ... So, magnitude ofmagnetic induction, B = (10–7)(10 / 25 x 10–4) = 4 x 10–12 Wb / m2.

Answer 2

Explanation:

 

Magnitude of magnetic induction due to a pole of strength m at a distance r from it is

B = (\mu0 / 4\pi)(m / r2) , 

   \mu0 / 4\pi = 10–7 H.

m = 10 Am,

  r = 5 cm = 5 x 10–2 m

So, magnitude of magnetic induction,

B = (10–7)(10 / 25 x 10–4)  =  4 x 10–12 Wb / m2.