Electricity and Magnetism Answers

Ms. Enriquez instructed the students to choose which between the two capacitor has the greatest capacitance. The metal plates of Capacitor A has an area of 100 cm² separated by a distance of 0.2 cm while Capacitor B's metal plates is 0.4 cm away from each other with an area of 50 cm². Which one shall the students choose?

5. The electric field caused by a certain point charge has a magnitude of 5.0 × 10^3 𝑁 𝐶 at a distance 0.10m from the charge. What is the magnitude of the charge?

6. Two particles having charges 𝑞1 = 1.00 × 10^−19𝐶 and 𝑞2 = 2.00 × 10^−9𝐶 are separated by a distance 2.00m. At what point is the total electric field due to the two charges equal to zero?

7. Create an illustration of the electric field lines of 𝑞1 = 1𝐶 between 𝑞2 and 𝑞3 both having a charge od -2C.

8. A uniform electric field 𝐸 = 8000 𝑁 𝐶 passing through a flat surface with an area of 𝐴 = 10𝑚^2 . Determine the flux if: a.) the electric field direction and the line perpendicular to the surface is pointing in the same direction. b.) the electric field direction and the line perpendicular to the surface is perpendicular. c.) the angle is 45�

Three 3.0μC charges are at the three corners of a square of side 0.50m. The last corner is occupied by a -3.0μC charge. Find the electric field at the center of the square.

the electron beam in a television tube consist of electron accelerated from rest through a potential difference of about 20000 v. what is the speed of the electrons?( ignore relativistic effects.) electron rest mass is 9.11x 10^31kg and electronic charge is 1.6x10^19c

An ion of charge, q=+1.60 x 10¹9 C entering a uniform magnetic field, B-0.3 T

with a velocity, v-6.5 x 10³ ms as shown in FIGURE 3(b). The mass of the ion is 1.76 x 107 kg.

Copy FIGURE 3(b). Sketch the path of the ion in the magnetic field.

[1 mark]

[6 marks]

Calculate the distance from the hole that the ion strikes the plate.

(ii)

(iii) Another ion of twice the mass but has the same charge and velocity enters. the magnetic field. Show on the same figure in (i) above, the path of this ion.

Aircraft sometimes acquire small static charges. Suppose a supersonic jet has a 0.60 µC charge and flies 30ᵒ north of west at a speed of 660 m s-1 over the Earth’s south magnetic pole, where the 8.00 X 10-5 T magnetic field points straight up. Determine the magnetic force on the supersonic jet.

Please can someone answer this with solutions? Thank you very much

Three positive point charges of 3.0 µC, 6.0 µC, and 2.0 µC, respectively, are arranged in a triangular pattern, as shown in the figure below. Find the magnitude and direction of the electric force acting on the 6.0 µC charge.

Two charges, Q and -Q, are held stationary at a distance of 4 m. Q= 5x10^-6 is given. a) What is the potential difference VB-VA? b) A point charge of mass 0.3 g and charge 2x10^-6 C, initially at rest, leaves point A. What is the velocity at B?

(The distance between Q and point A is 2 m. The distance between A and B are 1 m. The distance between B and -Q is 1 m.)

A man uses a rock as a fulcrum and lifts a 300-kg boulder with a metal bar 6.00 m long. Calculare the force necessary to lift the boulder if the fulcrum is:

(a) 1.00 m from where the bar contacts the rock.

(b) 3.00 m from where the bar contacts the rock

Two charges located on the positive x-axis has a first charge of 5nc which is 2cm from the orgin and second charge of 9nc which is 4cm from the orgin, what is the magnitude of force exerted by these two force on a third charge 5nc located at the origin