The operation of a tape player to play music depends on which of the following?
A) the Doppler effect
B) the photoelectric effect
C) the force acting on a current-carrying wire in a magnetic field
D) induced current from the motion of a magnet past a wire

Question

Quizplus · Accepted Answer

The operation of a tape player to play music involves the conversion of magnetic signals on the tape into electrical signals via induction. This induction occurs as a result of the motion of a magnet past a wire (i.e. the tape head), creating an induced current in the wire that corresponds to the magnetic signal on the tape. Therefore, option D, which describes induced current from the motion of a magnet past a wire, is the correct choice. The other options are not relevant to the operation of a tape player.

The Operation of a Tape Player to Play Music Depends