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15.1
15.1 (Take 2)
15.2
15.3
100
A device used to observe electric forces is a(n): a. galvanometer. b. voltmeter. c. compass. d. electroscope.
What is d. electroscope.
100
An object with equal amounts of positive and negative charge is called: a. positively charged. b. negatively charged. c. electrically neutral. d. electrically charged.
What is c. electrically neutral.
100
An electric current in a metal consists of moving: a. nuclei. b. protons. c. neutrons. d. electrons.
What is d. electrons.
100
A capacitor can be charged by: a. a resistor. b. a battery. c. wires. d. an ammeter.
What is b. a battery.
200
The unit of charge is the: a. ohm. b. ampere. c. volt. d. coulomb.
What is d. coulomb.
200
Positive electric charges: a. attract both positive charges and negative charges. b. repel both positive charges and negative charges. c. attract positive charges and repel negative charges. d. repel positive charges and attract negative charges.
What is d. repel positive charges and attract negative charges.
200
Because of Ben Franklin’s work, the direction of current in an electrical circuit is defined as going from: a. positive to negative. b. negative to positive. c. positive to positive. d. negative to negative.
What is a. positive to negative.
200
Capacitance is measured in units of: a. farads. b. volts. c. ohms. d. joules.
What is a. farads.
300
The negatively charged particle in an atom is a(n): a. electron. b. proton. c. neutron. d. neutrino.
What is a. electron.
300
Electric charge is: a. caused by two fluids, as described by Benjamin Franklin. b. present in metals only. c. a fundamental property of matter that has two types, positive and negative. d. found only in non-living material.
What is c. a fundamental property of matter that has two types, positive and negative.
300
The electrons in an insulator are best described as: a. free to move. b. fixed in place. c. flowing charges. d. a potential difference.
What is b. fixed in place.
300
A capacitor is a device that: a. charges electrons. b. charges protons. c. stores electrical energy. d. stores chemical energy.
What is c. stores electrical energy.
400
A rod and a piece of cloth are rubbed together. If the rod acquires a charge of +1 × 10-6 coulomb, the cloth acquires a charge of: a. 0. b. +1 × 10-6 coulomb. c. -1 × 10-6 coulomb. d. +1 × 10+6 coulomb.
What is c. -1 × 10-6 coulomb.
400
An electrically neutral object can be attracted by a positively charged object because: a. like charges repel each other. b. the charges on a neutral object can be redistributed. c. the neutral object becomes charged by friction. d. the net charge in a system varies.
What is b. the charges on a neutral object can be redistributed.
400
Almost all of the electrons flowing through a battery circuit come from atoms: a. in the wire conductor. b. in the circuit components. c. involved in chemical reactions at the battery's negative terminal. d. involved in chemical reactions at the battery's positive terminal.
What is a. in the wire conductor.
400
When a capacitor is discharged while connected to a circuit with little resistance, it can create a large amount of: a. current. b. farads. c. voltage. d. charge.
What is a. current.
500
If the distance between two charges is reduced by half, the electric force between them: a. decreases by 1 2 . b. decreases by 1 4 . c. increases by 2 times. d. increases by 4 times.
What is d. increases by 4 times.
500
Two point charges attract each other with a force of 8.0 × 10-5 newtons. If the distance between the charges is doubled, the force of attraction will become ____ newtons. a. 16 × 10-5 b. 2.0 × 10-5 c. 64 × 10-5 d. 4.0 × 10-5
What is b. 2.0 × 10-5
500
The definition of a one volt is one ____ per coulomb. a. amp b. watt c. joule d. second
What is c. joule
500
Capacitance is the: a. ability of a capacitor to store charge. b. ability of a capacitor to store resistance. c. buildup of electric charge on an object. d. flow of electric charge.
What is a. ability of a capacitor to store charge.