If I short out a D cell and draw a current of 7 A for 5 s, how many coulombs of charge move through the circuit?
a. 7 C b. 5 C
c. 7/5 C d. 35 C
[Ques. 2] If the temperature of a wire increases, its resistance
a. increases.
b. decreases.
c. does not change.
d. will increase or decrease depending on the composition.
e. will change in a way that can not be determined.
[Ques. 3] If the diameter of a wire increases, its resistance
a. increases.
b. decreases.
c. does not change.
d. will increase or decrease depending on the composition.
e. will change in a way that can not be determined.
[Ques. 4] If the length of a wire increases, its resistance
a. increases.
b. decreases.
c. does not change.
d. will increase or decrease depending on the composition.
e. will change in a way that can not be determined.
[Ques. 5] The resistance of a conducting material depends on its
a. composition.
b. length.
c. diameter.
d. temperature.
e. all of the above
[Ques. 6] Electrons are
a. positively charged. b. negatively charged.
c. uncharged. d. variably charged.
[Ques. 7] Two charged bodies separated by a distance d exert an electrical force on each other. The distance d is doubled. The electrical force on each body now
a. decreases by 1/4.
b. decreases by 1/2.
c. stays the same.
d. increases by 2 times.
e. increases by 4 times.
[Ques. 8] When we say charges are positive' or negative' we are speaking of
a. two intrinsically different types of charge found in nature.
b. an excess vs. a deficiency of charge.
c. charges existing vs. not existing.
d. none of the above.
[Ques. 9] What is the usual symbol used to represent an amount of charge?
a. C b. q
c. e d. none of the above
[Ques. 10] Two charged bodies separated by a distance d exert an electrical force on each other. The charge on one of the bodies is doubled. The electrical forces on each body now
a. double.
b. decrease by 1/2.
c. stay the same.
d. differthe force on the other body doubles, but the force on the body whose charge was changed stays the same as before.
e. increase by a factor of four.
Quick Reply
