What is 0 to the Power of 0 ?

What is the power of a convex lens of focal length 0.5 m?

Define electric power. Derive an expression for power in terms of current and resistance. An electric bulb is connected to a 200 V generator. The current is 0.5 A. What is the power of the bulb?

An electric bulb is connected to 250 volts. If the current of 0.5 A passes through it, what is the power of the bulb?

what is the power of a convex lens having focal length 0.5 m ?

An electric bulb is connected to 250 volts. If the current of 0.25 A passes through it, what is the power of the bulb ?

An electric is connected to a source of 250 volts. The current passing through it is 0.27 A. what is the power of a the bulb ?

An electric bulb is connected to a 220 V generator. The current is 0.50 A . What is the power of the bulb ?

Reduction potentials of 4 metals A, B, C and D are - 1.66 V, + 0.34 V, + 0.80 V and -0.76 V. What is the order of their reducing power and reactivity ?