Question

Give me the derDraw the pattern of magnetic field lines through and around a current carrying loop of wire.
Mark the direction of (i) electric current in the loop (ii) magnetic field lines.
How would the strength of magnetic field due to current, carrying loop be affected if(a)
radius of the loop is reduced to half its original value?
(b) strength of current through the loop is doubled?

Answer 1

(a) The magnetic field will be increased.
(b) Magnetic field lines will also be doubled.