PHYSICS · Single correct · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
Two identical solenoids carry the same current, but one has a soft-iron core while the other is empty. Which statement about the magnetic field inside them is correct?
(a) Both solenoids produce equal magnetic fields.
(b) The empty solenoid has the greater magnetic field.
(c) The solenoid with the soft-iron core has the greater magnetic field.
(d) Neither solenoid produces any magnetic field because the fields cancel inside.