Question

A simple pendulum with bob of mass m and conducting wire of length L swings(is hanging ) under gravity thro' an angle 2theetha. The earth's magnetic feild component in the direction perpendicular to swing is B. the max potential diff induced across pendulum is?

Answer 1

Area covered by the pendulum = radius * angle covered
                     A = L * 2θ
Magnetic field= B (perpendicular to the plane of the swing)

Magnetic flux = φ = B * area = 2 B L θ
The time period of the pendulum = T = 2π * √(L/g)
       Frequency of pendulum swing = f = 1/2π  * √(g/L)

Potential difference induced between the ends of the pendulum rod/wire
 = V = - dφ/dt = - φ * f = - 1/2π  * 2 BL θ * √(g/L)
       = - (Bθ/π) √(Lg)

Answer 2

Answer:

hope you understand

Explanation:

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