In the circuit shown in Fig. Sliding contact is moving with uniform velocity towards right. Its value at some instance is `12 (Omega)`. The current in the circuit at this instant of time will be

Options

A. `0.5A`
B. More than `0.5A`
C. Less than `0.5A`
D. May be less (or) more than `0.5A` depending on value of 'L'

Answer

B

Explanation

When 'R' increases 'I' decreases so `di//dt` is-ve.
`i=(6-Ldi//dt)/(12)`
`di/dt "negative" I gt 0.5`