Two solenoids are connected to identical battery packs
PHYSICS · Single correct · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
Two solenoids are connected to identical battery packs. Solenoid P has 600 turns uniformly wound over 30 cm and carries 3 A with an air core. Solenoid Q has 900 turns uniformly wound over 45 cm and carries 2 A with a soft iron core that increases the field inside the coil by a factor of 30 compared with an air core. Which statement correctly compares the magnetic fields inside the two solenoids?
(a) Both solenoids produce approximately equal magnetic field strengths.
(b) The magnetic field inside solenoid Q is stronger than that inside solenoid P.
(c) The magnetic field inside solenoid P is stronger than that inside solenoid Q.
(d) The magnetic field inside solenoid Q is only slightly (about 30%) stronger than that inside solenoid P.