QUIZ 2 -PHY112 EXAM QUESTIONS
WITH COMPLETE SOLUTIONS
Charged particles are at the corners of equilateral triangles, which all have the same
area. Rank the magnitude of the electric field strength at point P in each triangle from
greatest to least. - ANSWER-A = B = D > C
An electron moving to the right at a constant speed moves into an electric field. The
electric field is to the left. Which of the following correctly indicates how the field will
affect the electron's motion? - ANSWER-The electron will speed up.
Which of the following statements regarding equipotentials and electric fields is
accurate? - ANSWER-Electric field lines are perpendicular to equipotential lines.
A particle with a mass of 0.01 kg and a net charge of -0.05 C accelerates from rest
through a uniform electric field. If the strength of the field is 2000 V/C, what is the speed
of the particle after traveling for 0.5 m? - ANSWER-100m/s
What is the strength of an electric field measured 0.5 m from a point source with a net
charge of 5.0 μC? - ANSWER-1.8 x 105 N/C
A negatively charged particle moves through various electric fields. Which of the
following correctly indicates whether the negatively charged particle gained or lost
energy in each of the following examples? - ANSWER-Gained energy lost energy
gained energy
Based on the equipotentials shown in the example below, order the magnitude of the
potentials at points A, B, and C (from greatest to least). - ANSWER-A > B > C
How much energy does it take to move a particle with a charge of +6.0 μC a distance
0.5 m through a uniform electric field with a strength of 700 N/C? - ANSWER-2.1x10-3 J
Four point charges form a square 1.0 m on each side (see below). What is the potential
at a point in the center of the square of the value of q is 2 nC? - ANSWER-25.4 V
A particle with a charge of +2 μC is at the position marked by the x. Which statement
concerning the particle's energy at this position is most accurate? - ANSWER-The
particle will have a positive energy term.
The units used to measure the strength of an electric field are - ANSWER-Newtons per
Coulomb (N/C)
WITH COMPLETE SOLUTIONS
Charged particles are at the corners of equilateral triangles, which all have the same
area. Rank the magnitude of the electric field strength at point P in each triangle from
greatest to least. - ANSWER-A = B = D > C
An electron moving to the right at a constant speed moves into an electric field. The
electric field is to the left. Which of the following correctly indicates how the field will
affect the electron's motion? - ANSWER-The electron will speed up.
Which of the following statements regarding equipotentials and electric fields is
accurate? - ANSWER-Electric field lines are perpendicular to equipotential lines.
A particle with a mass of 0.01 kg and a net charge of -0.05 C accelerates from rest
through a uniform electric field. If the strength of the field is 2000 V/C, what is the speed
of the particle after traveling for 0.5 m? - ANSWER-100m/s
What is the strength of an electric field measured 0.5 m from a point source with a net
charge of 5.0 μC? - ANSWER-1.8 x 105 N/C
A negatively charged particle moves through various electric fields. Which of the
following correctly indicates whether the negatively charged particle gained or lost
energy in each of the following examples? - ANSWER-Gained energy lost energy
gained energy
Based on the equipotentials shown in the example below, order the magnitude of the
potentials at points A, B, and C (from greatest to least). - ANSWER-A > B > C
How much energy does it take to move a particle with a charge of +6.0 μC a distance
0.5 m through a uniform electric field with a strength of 700 N/C? - ANSWER-2.1x10-3 J
Four point charges form a square 1.0 m on each side (see below). What is the potential
at a point in the center of the square of the value of q is 2 nC? - ANSWER-25.4 V
A particle with a charge of +2 μC is at the position marked by the x. Which statement
concerning the particle's energy at this position is most accurate? - ANSWER-The
particle will have a positive energy term.
The units used to measure the strength of an electric field are - ANSWER-Newtons per
Coulomb (N/C)
