ABoth (a) and (b)
BOnly (a)
CNeither (a) nor (b)
DOnly (b)
Answer:
A. Both (a) and (b)
Read Explanation:
Both statements (a) and (b) are correct: the magnetic field inside a current-carrying solenoid is uniform, and one end behaves like a north pole while the other acts like a south pole, similar to a bar magnet.
Solenoid: Using a coil twisted into a compact helix, a solenoid is a form of electromagnet that produces a regulated magnetic field.
Because electric current flows to produce the magnetic field, solenoids are electromagnets.
They act like a magnet for bars.
One end of the solenoid functions as the north pole, and the other as the south pole.
The field inside the solenoid is never zero but is always uniform.