Question

Microwave heating, a form of dielectric heating, is understood as the generation of heat in materials of low electrical conductivity by an applied high-frequency electric field. For a substance to be microwaveable it must possess an asymmetric molecular structure, as in the case of a water molecule to form electric dipoles.

1. From the above statement, explain the total force on the dipoles in a uniform electric field.

2. From 1, derive the magnitude and direction of the net torque experienced by the dipoles.

3. Why do you think water can be heated by a microwave? Can you suggest why a certain liquid such as petrol cannot be heated by microwave?

please

Answer 1