Question

In a series A.C. circuit, R = 200 `Omega`, X_L= 400 `Omega` and X_C= 200 `Omega`. The phase difference between the applied e.m.f. and the current will be ____________.

विकल्प

• 0

• 37°

• 45°

• 90°

Answer 1

In a series A.C. circuit, R = 200 `Omega`, X_L= 400 `Omega` and X_C= 200 `Omega`. The phase difference between the applied e.m.f. and the current will be 45°.

Explanation:

`"tan"  phi = ("X"_"L" - "X"_"C")/"R"`

`= (400 - 200)/200`

`= 200/200`

`therefore "tan"  phi = 1 Rightarrow phi = 45° `