Question

A. Current flow inside the capacitor due to accumulation of charges on the capacitor walls is called displacement current.
B. Current due to the flow of electrons due to some potential difference is called as conduction current.
C. Displacement current came into existence when Maxwell observed that if a magnetic compass is placed between the capacitors the needle gets deflected which signifies presence of magnetic fields which would possibly caused due to some changing current.
D. Displacement current change the actual motion of electric charges.
Which of the above statement(s) is/are correct?

• A. A and B only
• B. A, B and C only
• C. C only
• D. A,B,C and D

Answer 1

Answer: (B)

A, B and C only

Displacement current is a quantity appearing in Maxwell's equations that is defined in terms of the rate of change of electric displacement field. Displacement current came into existence when Maxwell observed that if a magnetic compass is placed between the capacitors the needle gets deflected which signifies presence of magnetic fields which would possibly caused due to some changing current. Current flow inside the capacitor due to accumulation of charges on the capacitor walls is called displacement current.However it is not an electric current of moving charges, but a 'time-varying electric field'. Hence option D is incorrect.

Contrarily, current due to the flow of electrons due to some potential difference is called as conduction current.