The power of our microwave transmitters is about 15 mw. what is the approximate power of a typical microwave oven?

A typical microwave oven produces effective output power in the range of 400 W - 1200 W.

A microwave oven is one of the daily used kitchen appliances which uses EM microwaves for heat generation and is used in reheating, quick heating or even in cooking food. It needs AC power input and the effective output power generated is always less than the consumed power.

Microwave ovens use magnetron tube for generation of microwaves with frequencies nearly 2450 MHz. Compact microwaves have a power output range of 600-800 W and larger models output power between 850 W and 1650 W.

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6

conduction, convection, radiation