Multiple Choice Questions.
1) The number of protons in the nucleus of an electrically neutral atom is equal to .
A) the number of electrons surrounding the nucleus.
B) the number of neutrons in the nucleus.
C) the number of neutrons surrounding the nucleus.
D) the number of electrons in the nucleus.
E) None of the other choices is correct.
2) The main difference between conductors and insulators is in terms of .
A) valence or conduction electrons.
B) protons.
C) atoms.
D) neutrons.
E) None of the other choices is correct.
3) When the distance between the two charges is doubled, the force between them is .
A) quadrupled.
B) reduced by a factor of 4.
C) doubled.
D) reduced by a factor of 2.
E) reduced by a factor of 3.
4) When the magnitude of both interacting charges is increased by a factor of 2, the electrical forces between these charges is
A) reduced by a factor of 3.
B) reduced by a factor of 2.
C) reduced by a factor of 4.
D) doubled.
E) quadrupled.
5) Two charges, Q1 and Q2, are separated by a certain distance R. If the magnitudes of the charges are halved, and their separation is also halved, then what happens to the electrical force between these charges?
A) It is doubled.
B) It remains the same.
C) It increases by a factor of 16.
D) It is quadrupled.
E) It increases by a factor of 8.