question_answer

When an a.c. source of e.m.f. \[E={{E}_{0}}\] sin 100 t is connected across a circuit, it is observed that voltage leads the current by a phase angle\[\frac{\pi }{4}\]. If the circuit consists possible only R-L, R-C or L-C in series the two elements could be:

A) \[R=10\,\Omega ,L=10\,mH\]

B)  \[R=10\,\Omega ,L=1000\,\mu F\]

C)  \[R=10\,\Omega ,C=1000\,\mu F\]

D) \[R=10\,\Omega ,L=100\,mH\]