You can't calculate how many volts with that information; you could calculate the energy - 60 watts for 15 minutes is equivalent to 54,000 joules.
There are no volts in a light. A light consumes power.
The effects of being shocked by 13200 volts of electricity is probably death.
Sure. Electricity can hold any amount of electricity.
Electricity
Pressure
Electricity.
240 volts
The minimum is somewhere around 10000 volts, the max is many million.
Volts are the measure of Eletro motive force. (EMF)
Volts are the "electromotive force" that is needed to "drive" the electricity through the wiring.
1 ton
A car battery has usually 12 volts.