In a series L-R circuit, connected with a sinusoidal ac source, the maximum potential difference across L and R are respectivaly 3 volts and 4 volts.
At an instant the potemtial difference across resistor is 2 volts. The potential difference in volt, across the inductor at the same instant will be:
A. `3 cos 30^(@)`
B. `3 cos 60^(@)`
C. `6 cos 45^(@)`
D. 6