A current carrying infinitely long wire is kept along the diameter of a circular wire loop
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A current carrying infinitely long wire is kept along the diameter of a circular wire loop, without touching it, the correct statement(s) is(are) [2012]
(1) The emf induced in the loop is zero if the current is constant.
(2) The emf induced in the loop is finite if the current is constant.
(3) The emf induced in the loop is zero if the current decreases at a steady rate.
(4) The emf induced in the loop is infinite if the current decreases at a steady rate.