A particle (m = 2.0 g, q = 5.0 C) has a speed of 30 m/s at point A and moves (with only electric forces acting on it) to point B where its speed is 80 m/s. Determine the electric potential difference VA VB.
a. 2.2 kV
b. +1.1 kV
c. 1.1 kV
d. +2.2 kV
e. +1.3 kV
[Ques. 2] A proton (m = 1.7 1027 kg, q = +1.6 1019 C) starts from rest at point A and has a speed of 40 km/s at point B. Only electric forces act on it during this motion. Determine the electric potential difference VB VA.
a. +8.5 V
b. 8.5 V
c. 4.8 V
d. +4.8 V
e. 17 V
[Ques. 3] An electron (m = 9.1 1031 kg, q = 1.6 1019 C) starts from rest at point A and has a speed of 5.0 106 m/s at point B. Only electric forces act on it during this motion. Determine the electric potential difference VA VB.
a. 71 V
b. +71 V
c. 26 V
d. +26 V
e. 140 V
[Ques. 4] What is the speed of a proton that has been accelerated from rest through a potential difference of 4.0 kV?
a. 1.1 106 m/s
b. 9.8 105 m/s
c. 8.8 105 m/s
d. 1.2 106 m/s
e. 6.2 105 m/s
[Ques. 5] A proton (mass = 1.67 1027 kg, charge = 1.60 1019 C) moves from point A to point B under the influence of an electrostatic force only. At point A the proton moves with a speed of 60 km/s. At point B the speed of the proton is 80 km/s. Determine the potential difference VB VA.
a. +15 V
b. 15 V
c. 33 V
d. +33 V
e. 20 V
[Ques. 6] A proton (mass = 1.67 1027 kg, charge = 1.60 1019 C) moves from point A to point B under the influence of an electrostatic force only. At point A the proton moves with a speed of 50 km/s. At point B the speed of the proton is 80 km/s. Determine the potential difference VB VA.
a. +20 V
b. 20 V
c. 27 V
d. +27 V
e. 40 V
[Ques. 7] A particle (mass = 6.7 1027 kg, charge = 3.2 1019 C) moves along the positive x axis with a speed of 4.8 105 m/s. It enters a region of uniform electric field parallel to its motion and comes to rest after moving 2.0 m into the field. What is the magnitude of the electric field?
a. 2.0 kN/C
b. 1.5 kN/C
c. 1.2 kN/C
d. 3.5 kN/C
e. 2.4 kN/C
[Ques. 8] A particle (charge = +2.0 mC) moving in a region where only electric forces act on it has a kinetic energy of 5.0 J at point A. The particle subsequently passes through point B which has an electric potential of +1.5 kV relative to point A. Determine the kinetic energy of the particle as it moves through point B.
a. 3.0 J
b. 2.0 J
c. 5.0 J
d. 8.0 J
e. 10.0 J
[Ques. 9] A particle (charge = 50 C) moves in a region where the only force on it is an electric force. As the particle moves 25 cm from point A to point B, its kinetic energy increases by 1.5 mJ. Determine the electric potential difference, VB VA.
a. 50 V
b. 40 V
c. 30 V
d. 60 V
e. +15 V
[Ques. 10] A charged particle (q = 8.0 mC), which moves in a region where the only force acting on the particle is an electric force, is released from rest at point A. At point B the kinetic energy of the particle is equal to 4.8 J. What is the electric potential difference VB VA?
a. 0.60 kV
b. +0.60 kV
c. +0.80 kV
d. 0.80 kV
e. +0.48 kV
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