Q. No 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?
Ans: (i) If the current in the rod is increased then rod will be
deflected with greater force.
(ii) If a stronger horse-shoe magnet is used then also rod will
be deflected with greater force due to the increase in magnetic field.
(iii) If the length of the rod AB is increased.
