Does a transformer change the frequency of a.c. ?

What is the relationship between inductive reactance and the frequency of the a.c. source?

A bulb and a capacitor are connected in series to an a.c. source of variable frequency. How will the brightness of the bulb change on increasing the frequency of a.c. source ?

A bulb and a capacitor are connected in series to an a.c. source of varialbe frequency. How will the brightness of the bulb change on increasing the frequency of a.c. source ?

A bulb and a capacitor are connected in series to an a.c. source of variable frequency. How will the brightness of the bulb change on increasing the frequency of a.c. source?

When the current changes the direction 50 times in one second then the frequency of a.c. is 50 Hz. is this statement true.

How will the inductive reactance and capacitive reactance change on doubling the frequency of AC ?