Question

5. A current is induced in coil C1 due to the
motion of current carrying coil C2
(i) Write any two ways by which a large
deflection can be obtained in the
galvanometer G.​

Answer 1

Answer:

(1) By moving the coil(C₂) very fast (2) Moving the coil(C₁) very fast

Explanation:

We know that,

∈(ind) = -dФ/dt

Here, Ф = NA

N : no. of windings of coil(C₁)

A: Area of coil(C₁)

differentiate it to obtain ---->  

dФ/dt = Nπ2r(dr/dt)

"     "   =  Nπ2rv ---->( where v: velocity)

(3) you can also increase the number of coil windings to increase the induced current:

∈(ind) = Nπ2rv

I(ind) = ∈/R = Nπ2rv/R