Electricity and Magnetism Answers

A charge q = 1μC moves with velocity v = 3.0m/s in a direction which forms an angle of 45 degrees with respect to a magnetic field B = 0.15T .

Compute the intensity and the direction of the force acting on the charge.

A 120-V house circuit has the following light bulbs turned on: 40,60 and 75 W. Find the equivalent resistance of these lights.

1. An electron is shot at 10 m/s⁶ between two parallel charged plates. If the field intensity E between the plates is 1 KN/C, where will the electron strike the upper plate? Assume vacuum conditions.
2. Figure 2 below shows a triangular array of three point charges, Q₁ = 1.0 x10^-6 c, Q₂ = -2.0 x10^-6 c and Q₃ = 3.0 x 10^-6 c. The height of the triangle is 0.300 m and the length of the base is 0.400 m. Find the electric potential V of these source at the midpoint P of the base of the triangle.

A current-carrying circular plate with A= 32.2 m2 is inclined at 34° with the Earth’s field direction. If the magnitude of the magnetic field is 48 125 nT, solve for the (a) angle between the normal to the surface and the B vector, and the (b) magnetic flux through the antenna 

2.0 Figure 2 below shows a triangular array of three point charges. Find the electric [5]

potential V of these source charges at the midpoint P of the base of the triangle.

Q2 = -2.0 x 10-6c

Q3 = +3.0 x 10-6c

Q1 = +1.0 x 10-6c

P

0.200 m 0.200 m

0.300 m

1.0 An electron is shot at 106 m/s between two parallel charged plates, as shown in [5]

figure 1, below. If the field intensity E between the plates is 1KN/C, where will the

electron strike the upper plate? Assume Vacuum conditions.

Take e = 1.6 x 10-19c, m = 9.1 x 10-31kg,

+| + + + + + + + + + + + + + + + +| + + + + + + + + + + + + +

+

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

0.5 cm

x

106 m/s

In 5 minutes, a current of 5 amps is established in a wire. How many coulombs and how many electrons pass through each cross section of this wire?

Solve for the magnetic flux through a loop with an area of 8.5 ✕ 10 -4 m2 found perpendicular to a magnetic field with magnitude 0.75 T.

 A current-carrying circular plate with A= 32.2 m2 is inclined at 34° with the Earth’s field direction. If the magnitude of the magnetic field is 48 125 nT, solve for the (a) angle between the normal to the surface and the B vector, and the (b) magnetic flux through the antenna

write matlab code to implement differential length, area and volume with values from user?