Question

Arrange the following steps in sequential order to demonstrate the magnetic effect of the elctric cur-rent using magnetic compass.
(A) Wind an insulated conducting wire around the magnetic compass such that the axis of the coil is directed along east west direction and con-nect the free ends of the wire to a cell through a switch.
(B) Take a magnetic compass.
(C ) When current flows through the conducting wire, it behaves as a magnet and deflects the compass needle.
(D) When the switch is closed, the magnetic nee-dle in the compass deflects from its initial posi-tion and when the switch is opend, the needle comes back to its initial position.
A. BADC
B. CBAD
C. ACBD
D. ABCD

Answer 1

Correct Answer - A
(i) Take a magnetic compass.
(ii)Wind an insulated conducting wire aroundthe magnetic compass such that the axis of the coil is directed along east-west direction and con-nect the free ends of the wire to a cell through a switch.
(iii) When the switch is closed, the magnetic nec-dle in the compass deflects from its initial posit-tion and when the switch is opened, the needle comes back to its initial position.
(iv) When current flows through the conducting wire, it hehaves as a magnet and deflects the compass needle.