# College Physics Study Set 7

Physics & Astronomy

## Quiz 15 :Electric Forces and Electric Fields

Question Type
A repelling force must occur between two charged objects under which conditions?
Free
Multiple Choice

B

Tags
Choose question tag
An uncharged conductor is supported by an insulating stand.I pass a positively charged rod near the left end of the conductor, but do not touch it.The right end of the conductor will be:
Free
Multiple Choice

B

Tags
Choose question tag
When a glass rod is rubbed with silk, which of the following statements best describes what happens?
Free
Multiple Choice

A

Tags
Choose question tag
If the size of the charge value is tripled for both of two point charges maintained at a constant separation, the mutual force between them will be changed by what factor?
Multiple Choice
Tags
Choose question tag
About how many electrons are in 30 grams of water (H2O)?
Multiple Choice
Tags
Choose question tag
Who was the first to determine the electron's charge?
Multiple Choice
Tags
Choose question tag
Of the following substances, which one contains the highest density of free electrons?
Multiple Choice
Tags
Choose question tag
If body P, with a positive charge, is placed in contact with body Q (initially uncharged), what will be the nature of the charge left on Q?
Multiple Choice
Tags
Choose question tag
If body M, with a positive charge, is used to charge body N by induction, what will be the nature of the charge left on the latter?
Multiple Choice
Tags
Choose question tag
I wish to use a positively charged rod to charge a ball by induction.Which statement is correct?
Multiple Choice
Tags
Choose question tag
Which of the following best characterizes electrical insulators?
Multiple Choice
Tags
Choose question tag
Doug rubs a piece of fur on a hard rubber rod, giving the rod a negative charge.What happens?
Multiple Choice
Tags
Choose question tag
When charging two objects by rubbing them together:
Multiple Choice
Tags
Choose question tag
Two point charges are 4 cm apart.They are moved to a new separation of 2 cm.By what factor does the resulting mutual force between them change?
Multiple Choice
Tags
Choose question tag
Two point charges, separated by 1.5 cm, have charge values of +2.0 and -4.0 µC, respectively.What is the value of the mutual force between them? (ke = 8.99 * 109 Nm2/C2)
Multiple Choice
Tags
Choose question tag
The constant ke, which appears in Coulomb's law formula, is equivalent dimensionally to which of the following?
Multiple Choice
Tags
Choose question tag
How can a charged object attract an uncharged object made of non-conducting material?
Multiple Choice
Tags
Choose question tag
If the distance between two point charges is tripled, the mutual force between them will be changed by what factor?
Multiple Choice