Consider the following statements:
S1: An electric bell utilizes an electromagnet to function.
S2: The electromagnet in an electric bell remains magnetized as long as the circuit is complete.
S3: The rapid making and breaking of the circuit causes the bell to ring repeatedly.
1
Only S1 is true.
2
S1 and S2 are true.
3
S1 and S3 are true.
4
All S1, S2, and S3 are true.