Electricity and Magnetism Answers

A spark will jump between two people if the electric field exceeds 4.0 x 106 V/m. You shuffle across a rug and a spark jumps when you put your finger 0.48 cm from another person’s arm. Calculate the potential difference between your body and the other person’s arm.

A potential difference of 0.90 V exists from one side to the other side of a cell membrane that is 4.7 nm thick. What is the electric field across the membrane?

A cloud has a potential difference relative to a tree of 6.8 x 102 MV. During a lightning storm, a charge of 1.60 x 102 C travels through this potential difference. How much work is done on this charge?

It takes 7.3 mJ to move a charge of 4.7 μC from Point A to Point C in an electric field. What is the potential difference between the two points?

What is the potential difference required to stop a proton traveling at an initial speed of 2.33 x 107 m/s? ( mass of a proton is 1.67 x 10-27 kg)

What is the potential difference required to stop an electron traveling at an initial speed of 2.29 x 107 m/s? (mass of an electron is 9.1 X 10-31 kg)

You measure an electric field of 2.52×106 N/C at a distance of 1.196 m from a point charge. What is the magnitude of the charge?

The electric field is measured to be 22.7 N/C due to a point charge of 6.1 nC. How far away was the electric field measured?

What is the size of the force on an electron when the electron is in a uniform electric field that has an intensity of 8.7 x 10 7 N/C