PHYSICS 1260 EXAM 1 QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
The electrical force between charges is strongest when the charges are
A) close together
.B) far apart.
C) [either of these]
D) [need more information] - ANS close together
The electrical force between electric charges depends only on their
A) magnitude (strength of charge).
B) separation distance.
C) [both of these]
D) [neither of these] - ANS both of these
The electrical force on a 2-C charge is 60 N. The electric field where the charge is located is
A) 20 N/C.
B) 30 N/C.
C) 60 N/C.
D) 120 N/C.
E) 240 N/C. - ANS 30 N/C
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, The direction of the electric field is the same as the direction of the electric (Coulomb) force
exerted on
A) a neutral test charge.
B) an electron.
C) an atom.
D) a proton.
E) a molecule. - ANS a proton
Between a pair of equal and opposite charges, field lines are
A) directed from positive to negative.
B) more concentrated closer to the charges.
C) vectors, with patterns that stem from the inverse-square law.
D) [all of these]
E) [none of these] - ANS all of these
Electric potential is defined as - ANS the electrical potential energy per unit charge (volts)
Electric potential, measured in volts, is the ratio of electrical potential energy to the amount of
electric
A) current.
B) resistance.
C) charge.
D) voltage.
E) [none of these] - ANS Charge
If 10 J of work is used in pushing a 1-C charge into an electric field, its electric potential relative
to its starting position is
A) less than 10 V.
B) 10 V.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
ANSWERS GRADED A+ 2025/2026
The electrical force between charges is strongest when the charges are
A) close together
.B) far apart.
C) [either of these]
D) [need more information] - ANS close together
The electrical force between electric charges depends only on their
A) magnitude (strength of charge).
B) separation distance.
C) [both of these]
D) [neither of these] - ANS both of these
The electrical force on a 2-C charge is 60 N. The electric field where the charge is located is
A) 20 N/C.
B) 30 N/C.
C) 60 N/C.
D) 120 N/C.
E) 240 N/C. - ANS 30 N/C
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, The direction of the electric field is the same as the direction of the electric (Coulomb) force
exerted on
A) a neutral test charge.
B) an electron.
C) an atom.
D) a proton.
E) a molecule. - ANS a proton
Between a pair of equal and opposite charges, field lines are
A) directed from positive to negative.
B) more concentrated closer to the charges.
C) vectors, with patterns that stem from the inverse-square law.
D) [all of these]
E) [none of these] - ANS all of these
Electric potential is defined as - ANS the electrical potential energy per unit charge (volts)
Electric potential, measured in volts, is the ratio of electrical potential energy to the amount of
electric
A) current.
B) resistance.
C) charge.
D) voltage.
E) [none of these] - ANS Charge
If 10 J of work is used in pushing a 1-C charge into an electric field, its electric potential relative
to its starting position is
A) less than 10 V.
B) 10 V.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
