Home
Class 12
PHYSICS
Assertion (A) : An ac emf which oscillat...

Assertion (A) : An ac emf which oscillates symmetrically about zero, the current it sustains also oscillates symmetrically about zero.
Reason (R ) : In any circuit element, current is always in the phase with voltage

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.

B

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

Assertion is true but Reason is false

D

Assertion is false but Reason is true

Text Solution

Verified by Experts

The correct Answer is:
4
In inductor current lags the voltage by `(pi)/(2)`
In capacitor current leads the voltage by `(pi)/(2)`
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    NARAYNA|Exercise LEVEL - I (C.W)|23 Videos

  • ALTERNATING CURRENT

    NARAYNA|Exercise LEVEL - II (C.W)|11 Videos

  • ALTERNATING CURRENT

    NARAYNA|Exercise C.U.Q|66 Videos

  • ATOMIC PHYSICS

    NARAYNA|Exercise LEVEL-II (H.W)|14 Videos

Similar Questions

Explore conceptually related problems

Assertion (A) : At resonance , the current becomes minimum is a sreies LCR circuit. Reason (R) : At resonance, voltage and current are in same phase in a series LCR circuit.

Assertion (A) : If current varies sinusoidally the average power consumed in a cycle is zero. Reason (R ) : If current sinusoidally the average power consumed is zero

Assertion (A): An alpha particle placed in a magnetic field will not experience any force, if it moves in the magnetic field parallel to field lines. Reason (R): The force is zero if current and field are in the same direction.

Assertion: In series L-R circuit voltage leads the current. Reason: In series L-C circuit leads the voltage.

Assertion: Faraday's laws are consequences of conservation of energy. Reason: In a purely resistive AC circuit, the current lags behind the e.m.f. in phase

Assertion (A): If A is skew symmetric matrix of order 3 then its determinant should be zero Reason (R): If A is square matrix then det(A)=det(A')=det(A')

Assertion : In series L-C-R circuit, voltage will lead the current function for frequency greater than the resonance frequency. Reason : At resonance frequency, phase difference between current function and voltage function is zero.

Complete the following statement: When the current in an oscillating LC circuit is zero,