Watt - hour meter measures

The product of volt and coulomb is joule. (ii) The produce of volt and ampere is joule per second. (iii) The product of volt and watt is horse power. (iv) Watt-hour can be measured in terms of eletron-volt

What does watt-hour measure?

In alternating current circuits, the a.c. meters measure

In alternating current circuits, the a.c. meters measure