In an electrical circuit, a voltage difference:
A. supplies energy to make charge flow
B. causes a short circuit
C. is the term used for rate of charge flow
D. wastes energy

What are similarities and differences of reflection, refraction, diffraction and absorption?

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)