You mean "100 times per second at 50HZ AC"100 times on 50mHz AC
No, it varies with t. The average is zero.sin(2*pi*50*t)=0
Wrong.if yr frequency is 1 hz.... then half time it will be on and half time it will be off.
Wrong. Look at this diagram.so two stages one on and one off ... so basically u can see only one flash
Just when I thought we had had all the possible wrong answers! We are talking about rate of flash.it is equal to: (2*50)+1=101 times