Question

A thin semicircular conducting ring (PQR) of radius 'r' is falling with its plane vertical in a horizontal magnetic field B, as shown in figure. The potential difference developed across the ring when its speed is v, is:

• A. $\frac{Βνπr^2}{2}$ and P is at higher potential
• B. πrBv and R is at higher potential
• C. 2rBv and R is at higher potential
• D. Zero

Answer 1

Answer: (C)

2rBv and R is at higher potential

Answer 2

The correct option (C): 2rBv and R is at higher potential