Question

Electric current is passed through a straight
conductor passing through the cent re of a
piece of cardboard. Some iron filings are
sprinkled on the cardboard and tapped. The
iron filings around the conductor.
(a) settle as parallel lines
(b) settle as circles
(c) settle at one point
(d) do not acquire any regular pat tern​

Answer 1

Answer:

option B

Explanation:

The iron filings around the conductor settle as circles indicating the field lines of a magnetic field around a straight current carrying conductor.