Question 6 (1 point)

Question

If a positively charged glass rod is used to charge a metal bar by induction,
a
the charge on the bar will be greater in magnitude than the charge on the glass rod.
b
the charge on the bar must be negative.
c
the charge on the bar will be equal in magnitude to the charge on the glass rod.
d
the charge on the bar must be positive.
Question 7 (1 point)
Which of the following transfers charge most easily?
a
semiconductors
b
conductors
c
nonconductors
d
insulators
Question 8 (1 point)
Which sentence best characterizes electric insulators?
a
They have high tensile strength
b
They are good heat conductors.
c
Charges on their surface do not move.
d
Electric charges move freely in them.

Answer 1

Question 6: If a positively charged glass rod is used to charge a metal bar by induction, the correct answer is: b. the charge on the bar must be negative.
(When a positively charged object is brought near a neutral conductor, it induces a separation of charges. The side of the conductor near the charged object becomes negatively charged while the far side becomes positively charged, leading to an overall negative charge on the bar after grounding or separation.)

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Question 7: Which of the following transfers charge most easily? The correct answer is: b. conductors.
(Conductors allow electric charge to flow freely due to the presence of free electrons or charge carriers.)

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Question 8: Which sentence best characterizes electric insulators? The correct answer is: c. Charges on their surface do not move.
(Insulators do not allow electric charges to move freely; the charges are generally fixed in place.)