Answer:
What is the force of repulsion between two charges of 1c each kept 1'm apart in vacuum?
Answer. r=1/2m=50cm
Explanation:
The answer is A. X rays or it can be visible light but mostly A.
There are four factors affecting resistance which are Temperature, Length of wire, Area of the cross-section of wire and nature of the material. When there is current in a conductive material, the free electrons move through the material and occasionally collide with atoms.
Symbols such as cross motivates me to go to church.