Question

___1. The (attempted) demonstration in class with the pith balls and a variety of materials indicated that

(A) there are two kinds of electrical properties (now referred to as positive and negative charge).
(B) objects with the same type of charge repel, while objects with different types of charge attract.
(C) "charge is conserved" in that whenever a positive charge is produced, an equal amount of negative is also produced.
(D) all of the above.
___2. A rod with an unknown charge attracts a pith ball (as in the attempted lecture demonstration). Which of the following could describe the situation?

(A) The rod has negative charge and the pith ball has positive charge.
(B) The rod has positive charge and the pith ball has negative charge.
(C) They both have positive charge.
(D) They both have negative charge.
___3. The lab exercise with scotch tape and a variety of other materials indicated that
(A) there are two kinds of electrical properties (now referred to as positive and negative charge).
(B) objects with the same type of charge repel, while objects with different types of charge attract.
(C) "charge is conserved" in that whenever a positive charge is produced, an equal amount of negative is also produced.
(D) all of the above.
___4. The lab exercise with scotch tape and a variety of other materials indicated that
(A) there are three kinds of electrical properties (now referred to as positive, negative and magnetic charge).
(B) objects with the same type of charge attract, while objects with different types of charge repel.
(C) "charge is quantized " in that on average, the charge created is an integer multiple of the neutron’s charge.
(D) all of the above.
___5. Total electric charge in a closed system is conserved
(A) always.
(B) never.
(C) only in conductors.
(D) except within conductors.
___6. An electron has negative charge
(A) as a consequence of the conventions set by Benjamin Franklin.
(B) means that the electric force on the electron and the electric field are in opposite directions.
(D) results in an attractive force between the electrons and the positively charged protons in an atom's nucleus.
(D) all of the above.

Answer 1

Answer:

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