A square conductind loop, `20.0 cm` on a side placed in the same magnetic field as shown in Fig. 3.195, center of the magnetic field region, where `dB//dt = 0.035 T s^(-1)`.

The potential difference between points `a and b` is

Options

A. (A) `6 V`
B. ( b) `0`
C. ( c) `10 V`
D. (d) `12 V`

Answer

B

Explanation

(b) `epsilon_(ab) = (1)/(8)epsilon`, But there is a potential drop of
`V = (IR)/(8) = (epsilon)/(8)`
so the potential difference `epsilon_(ab) - V` is zero.