The principle on which an electric bell works is based on which one of the following properties of electric current?
A. Heating effect of current
B. Magnetic effect of current
C. Electromagnetic induction
D. Joule – Thomson effect
Answer:B
The principle on which an electric bell works is based on which one of the following properties of electric current?
A. Heating effect of current B. Magnetic effect of current C. Electromagnetic induction D. Joule – Thomson effect