Electricity and Magnetism Answers

An alpha particle has a mass of 6.6 × 10−27 kg and charge of Q=+2e=3.2×10-19 compare the magnitude of the electron repulsion between two apha particles with that of the gravitaiontal field between them.

For TE10 mode for the wave guide is filled with air and broader dimension of the wave guide is 2cm then the. Cut off frequency?
Ans: 7.5GHz

What is The electric field E (peak value) in a microwave beam density 100W/m² travelling in free space

What electric potential would be measured at a distance of 12cm from a charge of 3.5 x 10-5 C? What would be the potential if the distance were increased to 30 cm?
How much work must be done to carry a 3.0 x 10-5 C charge from 12 cm to 30 cm?

Three point charges A, B, and C sit on the corners of an equilateral triangle with side length 10cm. Each charge has a of magnitude 2.32 x 10-6 C with charge A and C being negative and B being positive, as shown in the diagram below. What is the net force on each of the point charges? Include vector diagrams for each charge in your answer.

Two charged metal balls are separated by a sphere. One ball is charged negatively and the other positively. After an hour, the positive and negative charges are the same. Is the bar made of an insulator or conductor?

Two positive charges are placed a few centimeters apart and then released so that they can move freely. What will happen to the electrostatic force between them as time goes on?

The force between two stationary charged objects is measure to be 15.0 N. If distance between the objects is doubled, what is the new force between the two objects?

A 0.56-C charge is placed 15.0 m from a 1.56-C charge. What is the force between them?

Three charged objects are placed as follows: Object B (1.5mC), object R (2.0mC), and object L (unknown). The distance between B and R is the same as the distance between the R and L. If the force on R is zero, what is the charge on L?