Electric Circuits Answers

Two point charges Q1 = +5.00 nC and Q2 = -3.00 nC are separated by 35.0 cm (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges?

Two point charges are on the y-axis. A 4.50uC charge is located at y=1.25 cm, and a -2.24uC charge is located at y=-1.80 cm. Find the total electric potential at (a) the origin and (b) the point whose coordinates are (1.50 cm, 0).

Find the electric potential difference (change in Ve) required to stop an electron (called a “stopping potential”) moving with an initial speed of 2.85 x 10^7 m/s. Would a proton travelling at the same speed require a greater or lesser magnitude of electric potential difference? Explain.

An electron moving parallel to the x-axis has an initial speed of 3.70 x 106 m/s at the origin. Its speed is reduced to 1.40 x 105 m/s at the point x=2.00 cm. (a) Calculate the electric potential difference between the origin and that point. (b) Which point is at the higher potential?

The electric potential at x=3.00 m is 120 V, and the electric potential at x=5.00 m is 190 V. What is the x-component of the electric in this region, assuming the field is uniform?

In a certain region of space, the electric field is zero. From this fact, what can you conclude about the electric potential in this region?

Two 2.00 mC point charges are located on the x-axis. One is at x=1.00 (a) Determine the electric field on the y-axis at y=0.500 m (b) Calculate the electric force on a -3.00C charge placed on the y-axis at y=0.500 m

Four charged particles are at the corners of a square of side a. Determine (a) the electric field at the location of charge q and (b) the total electric force exerted on q.

Three charged particles are located at the corners of an equilateral triangle with sides 2.00C, -4.00C, 7.00C subtended by an angle of 60.0 degree at one end . Calculate the total electric force on the 7.00C charge.

Three point charges are arranged as shown in figure 40. Find(a) the magnitude and (b) the direction of the electric force on the particle at the origin.