Coefficient of Mutual Induction -2!

Electricity and Magnetism Level 3

A very long straight conductor and isosceles triangular conductor lie in a plane and are separated from each other as shown in the figure. If $a = 10 \text{ cm}$ , $b = 20 \text{ cm}$ and $h = 10 \text{ cm}$ , find the coefficient of mutual induction.

3.6*10^{-8}H

4.8*10^{-8}H

2.4*10^{-8}H

1.2*10^{-8}H

1 solution

Nishant Rai
May 15, 2015

Sir, as HENRY is S.I. Unit, we should use a,b & h while solving the problem. And, if we solve the problem by using a,b & h as S.I. Units, the Exact answer comes out to be (1.2274)(10^-8). But, the answer you've posted (1.2)(10^-6) can be derived if and only if we use a,b & h as C.G.S. Units. But, that DOES NOT give us the Unit HENRY. I've also posted the answer (1.2)(10^-6). But, that is Not the Correct Answer. Am I wrong anywhere? Please Notice this. Please correct me if I am wrong anywhere.

Rubayet Tusher - 6 years ago

oh, for sure you are correct.

i made a mistake in marking the answer and now there is no option of changing it!

and please don't call me Sir, i am just as old as you are! Call me Nishant, it's much better! $\ddot \smile$

Nishant Rai - 6 years ago

Thanks a lot for your reply, Nishant. Your questions are really nice & informative. Please keep on posting such questions more & more.... Thanks.

Rubayet Tusher - 6 years ago

You can edit the problem and write it find answer as M/100 Where M is mutual Inductance

Rishabh Deep Singh - 5 years, 3 months ago

Coefficient of Mutual Induction -2!

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