Week -2
question no:1
Ans: when the switch is close battry connect with solenide coil and currunt pass and EMF generate and ,etal rod will attract near ball and collide with the ball and creat sound .
question no:1
Ans: when the switch is close battry connect with solenide coil and currunt pass and EMF generate and ,etal rod will attract near ball and collide with the ball and creat sound .