Electricity and Magnetism Answers

11. A proton (+q) is 50nm away from an electron (-q) which is 30nm away from another proton (+2q) with

a charge +2q. What is the net electric force on +2q?

12. What is the direction of the net electric force on +2q?

13. What is the net electric field at +2q?

14. What is the net electric force on the proton (+q) in number 11?

2 charged particles reacted with a force of 0.40 N with a distance of 1.6 cm, the 2nd charge contains 60 nC. Find the value of the first charge.

The Force between two identical charge's 1.90 x10^-2 C is separated by 1 cm. What is the electric froce between the two of charges?

Find the electric force between two electrons separated by a distance of 10 cm.(The charge of an electron=-1.6x10^-19 C

Calculate the total force on charge A. All three charges are 2.5uC. The distance from A to B is 2.0 m and from B to C is 2.0 m and angle B is 90°

a dielectric object is placed in an electric field.the object becomes polarised and a large number of atomic inmolicular dipole in the object align in the direction of the applied electric field.drive an expression for the electric potential due to this polarised dielectric at a point outside the dielectric

The mutual inductance between two coils is 150 mH. Find the magni- tude of the e.m.f. induced in one coil when the current in the other is increasing at a rate of 30 A/s.

What is the strength of the ionic interactions between an ion with 2 positive charges and an ion with 1 negative charges, when the distance between them is 15.5 nanometers and the solvent is benzene, with a dielectric constant of 4.6?

A circular copper waveguide has a radius of 0.4 cm and is filled with a dielectric material having 𝜀𝑟 = 1.5 and tan δ = 0.0002.

2.1.1. Identify the first four propagating modes and their cut-off frequencies.

2.1.2. For the dominant mode, calculate the attenuation due to dielectric loss and attenuation due to conductor loss at 20 GHz.

What is the potential energy of two charges of +4.2 uC and +6.1 uC which are separated by the distance of 50.0 cm