Question 2:
In Activity 13.7 (page: 230), how do we think the displacement of rod AB will
be affected if (i) current in rod AB is increased: (ii) a stronger horse-shoe
magnet is used: and (iii) length of the rod AB is increased?
Answer:
A current-carrying conductor placed in a magnetic field experiences a force. The
magnitude of force increases with the amount of current, strength of the magnetic
field, and the length of the conductor. Hence, the magnetic force exerted on rod
AB and its deflection will increase if
(i) current in rod AB is increased
(ii) a stronger horse-shoe magnet is used
(iii) length of rod AB is increased
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