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Two dissimilar poles of strength x mWb a...

Two dissimilar poles of strength `x mWb` and `2 mWb` are sparated by a distance `12 cm`. If the null point is at a distance of a `4 cm` fro `2 mWb`, then calculate `x`.

A

5 mWb

B

6 mWb

C

7 mWb

D

8 mWb

Text Solution

Verified by Experts

The correct Answer is:
D
`sqrt(((4)/(x^(2)))=(4)/(4+12)=(4)/(16))`
`(4)/(x^(2))=(1)/(16)`
`x=8mWb`
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