Back to ALTERNATING CURRENT

NEET UG PHYSICS MCQ: ALTERNATING CURRENT

1 Medium

1 of 1

Analyzing +4 | -1

Choose the incorrect statement

View answer and explanation

Correct option: D

When a current

i=(1+2 \sin \omega t)

A

flows in a wire, d. c ammeter reads

2 {~A}

.

Option D (When a current

i=(1+2 \sin \omega t)

A

flows in a wire, d. c ammeter reads

2 {~A}

.) is the incorrect statement because a DC ammeter reads the average value of the current, which is 1 A in this case, not 2 A.

More Questions from ALTERNATING CURRENT

Practice All Chapter MCQs →

Assertion (A) : In an

\mathrm{AC}

circuit, potential difference across the capacitor may be greater than the applied voltage.

Reason (R) :

V_C=I X_C

V=I Z

X_C

can be greater than

Z

also. When power is drawn from the secondary coil of the transformer, the dynamic resistance An alternating e.m.f. is applied to purely capacitive circuit. The phase relation between e.m.f. and current flowing in the circuit is or
In a circuit containing capacitance only
Average power in the L-C-R circuit depends upon A generator produces a voltage that is given by

V = 240\sin 120\;t

, where t is in seconds. The frequency and r.m.s. voltage are In a choke coil, the resistance

{X_L}

R