The strength of the magnetic field around a long straight conductor is directly…
MATHEMATICS · Single correct · ISC · Physics · Magnetic Effects of Current and Magnetism · Ampere's circuital law
Problem
The strength of the magnetic field around a long straight conductor is directly proportional to
(a) the square of the distance from the conductor
(b) the current through the conductor
(c) the distance from the conductor
(d) the square of the current through the conductor