A thin semicircular conducting ring (PQR) of – McqOptions

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1.	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 thering when its speed is v, is:
A.	Zero
B.	\[Bv\pi {{r}^{2}}/2\] and P is at higher potential
C.	\[\pi rBv\] and R is at higher potential
D.	2rBv and R is at higher potential
Answer» E.

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