Alternating Current Test

Result

Alternating Current Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

The phase difference between the alternating current and emf is π/2. Which of the following cannot be the constituent of the circuit?

A
C alone

B
R.L

C
L. C

D
L alone

Solution

0 < phase difference for R-L circuit < π/2
Hence, option B is correct.
Question 2
1 / -0

In an LCR series a.c. circuit, the voltage across each of the components, L, C and R is 50 V. The voltage across the LC combination will be

A
50 V

B
50√2 V

C
100 V

D
0 V(zero)

Solution

In series LCR circuit, the voltage across the inductor (L) and the capacitor (C) are in opposite phase.