Electricity and Magnetism Answers

1.An electron has an energy of 2.3 ev. What is the energy of the electronic in J?

2.The shopping potential for a photoelectric cell is 5.7 v. Calculate the maximum kinetic energy of the emitted photo electrons in ev?

3.What is the energy in ev of an electron with a velocity of 6.2×10 6m/s

Two point charges ares separated by a distance of one meter .The two point charges have magnitudes of 2.5x10^-4 C and 1.5 x10^-2 C.Find the electric force between the two. Round your final answer to it's nearest hundreths.

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?