Electricity and Magnetism Answers

Magnetic force on a charged particle, moving in a magnetic field is given by

: Devise a strategy to derive an expression of Electric Field at a point R due to an Electric Dipole without using the expression of Electric Scalar Potential. You can use either Coulumb’s or Gauss’s Law.

3. In the figure three charged particles lie on an x axis. Particles 1 and 2 are fixed in place. Particle 3 is free to move, but the net electrostatic force on it from particles 1 and 2 happens to be zero. If L23 = L12, what is the ratio q1/q2?

Q.1 In all the questions in this quiz, the zero of potential is taken at infinity.
Consider two equations

1

(a) A is a law of nature

(b) A comes from definitions alone

(c) B is a law of nature

(d) B comes from definitions alone

The equation for an alternating current is given by i - 77 sin 314 t. Find the peak value, frequency, time period and instantaneous value at t-2 ms

Two similar coils which are separated by 2m are having radius of 1m and 80 turns have a common axis.Calculate the strength of magnetic field at a point midway between them on their common axis when a current is 0.2A .
Ans 0.04√2T

A 3.6 μC charge is moved from a position where its electric potential energy is 7.2 mJ to a position where its potential energy is 1.8 mJ. What is the potential at the first position?

Three point charges, q1 = 2.0 μC, q2 = 2.0 μC, and q3 = −1.0 μC, are located at the vertices of an equilateral triangle of side length 30 cm. What is the potential energy of this arrangement?