Electricity and Magnetism Answers

Charges 5.0×10−7

C,−2.5×10−7

C and 1.0×10−7

C are held fixed at the three corners A,B,C of an equilateral triangle of side 5.0cm respectively. Find the electric force on the charge at C due to the rest two.

1. A solid conducting sphere of radius 40 cm has a charge of 5 µC. If the potential is zero

at infinity. Find the value of the potential at the following distances from the center of

the sphere:

a) 50 cm b) 40 cm c) 25 cm

Charges 5.0×10−7

C,−2.5×10−7

C and 1.0×10−7

C are held fixed at the three corners A,B,C of an equilateral triangle of side 50cm respectively. Find the electric force on the charge at C due to the rest two.

when a wire is moved through a magnetic field the resustsnce of the closed circuit affect

Two linearly polarized waves 4₁(2,0) = 3 cos(kz- wt) and (2,1)= 2 cos(kz-wt + 0) moving along x and y axis respectively is superposed with each other. Draw the path traced by the resultant electric vector for each polarised state for the values of 0 [0,0,0=Tabulate the values of the characteristic parameters of the curves corresponding each polarized state.

For the given vectors A = a x + a y +2a z and B = 2a x - a y + a z , A.B is

The plane of a square wire circuit with side 4.0 cm long is at an angle of 45° with respect to a uniform magnetic field of 0.25 T. The wires have a resistance per unit length of 0.2. If the field drops to zero in 2.5 s, what magnitude current is induced in the square circuit?

A square loop wire of length l= 0.1m on each side had mass 50 g and pivots about axis AA' that corresponds to a horizontal side of the square. A magnetic field of 500 G directed vertically downward, uniformly fills the region in the vicinity of the loop. The loop carries current I so that it is in equilibrium at angle 20 degree. Consider force on each side separately and find the direction of current to maintain 20 degree? Find the torque in the loop about the axis?

A 72 nC charge is located at x = 3.00 m on the x-axis and an 8.0 nC charge is located at x = 7.0 m. At what point on the x-axis is the electric field zero?

If a house is supplied with 120 V, 100 A service, 2400 W electric range 1000 W steam iron Ten 25W bulbs one 500W Refrigrator If all the appliances are used for 4 Hour 15 Minutes how much energy is converted in kWh?