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100
Like charges __________.
Like charges repel.
100
What is the magnitude and direction of the force on a -5 coulomb charge in a electric field of magnitude 10 newtons per coulomb directed due north?
The magnitude is 50 newtons and the direction is due south.
100

An empty closed metal box with a volume of 2 cubic meters is placed in an electric field of magnitude 25 N/C. What is the magnitude of the electric field inside the box?

The magnitude of the electric field inside the box is zero.

100
What is the angle between an electric field line and an equipotential surface?
The angle between an electric field line and an equipotential surface is 90 degrees.
100

The electric field inside an ideal parallel plate capacitor is: a) greatest at the positive plate. b) greatest at the negative plate. c) greatest at the midpoint between the plates. d) the same everywhere.

d) the same everywhere.

200
Charging without touching is called charging by _________.
Charging without touching is called charging by induction.
200
If there is a negative charge on the left and a positive charge on the right, the electric force on a negative charge in the middle will be directed to the _____.
The electric force on a negative charge in the middle will be directed to the right.
200

What is the angle between an electric field line and a conductor?

The angle between an electric field line and a conductor is 90 degrees.

200
What is the difference between Electric Potential and Electric Potential Energy?
Electric Potential is a measure of the amount of Electric Potential Energy in each coulomb of charge. It is measured in volts or joules per coulomb.
200

When a capacitor is connected across the terminals of a battery: a) charge flows at a steady rate through the circuit. b) charge starts to flow but slows to a stop over time. c) no charge flows around the circuit.

b) charge starts to flow but slows to a stop over time.

300
The net charge of an isolated system: a) always increases. b) always decreases. c) always stays the same. d) can increase or decrease.
c) always stays the same.
300

There is a 20 newton electrical force between two charged particles. If the distance between the particles is doubled, the magnitude of the new force will be _____.

The magnitude of the new force will be 5 newtons.

300
In a field line diagram for a -2 coulomb charge and a +6 coulomb charge, 6 field lines are drawn between the charges. How many filed lines extend to infinity?
12 field lines extend to infinity.
300

A 2 coulomb charge is moved 3 meters along an equipotential surface. How much work is done on the charge?

No work is done on a charge if it is moved along an equipotential surface.

300

If the charge density in a capacitor is doubled, what happens to the electric field inside the capacitor?

The electric field doubles.

400
Charge is concentrated on the ____________ of a conductor.
Charge is concentrated on the outside of a conductor.
400
The electrical force between two charges is 20 newtons. If both charges are doubled, the magnitude of the new force will be _______.
The magnitude of the new force will be 80 newtons.
400

If a 10 coulomb charge experiences a 30 newton electrical force, what is the magnitude of the electric field?

The magnitude of the electric field is 3 newtons per coulomb.

400

Electric potential due to a point charge 8 meters away is 12 volts. What is the electric potential due to the same charge at distance of 2 meters?

The electric potential due to the same charge at distance of 2 meters is 48 volts.

400

If the area of a capacitor is doubled while the charge stays the same, what happens to the magnitude of the electric field inside the capacitor?

The magnitude of the electric field is cut in half.

500
Charges in a conductor will arrange themselves to cancel out any ___________.
Charges in a conductor will arrange themselves to cancel out any electric fields.
500
On an x-y graph, a -2 coulomb charge is at the point (0, 1) and a +2 coulomb charge is at the point (-1, 0). What is the direction of the electrical force on a positive charge at the origin?
The electrical force on a positive charge at the origin is directed up and to the right at a 45 degree angle above the x-axis.
500
On an x-y graph, there is a 20 coulomb charge at the point (-2, 0) and a 20 coulomb charge at the point (2, 0). What is the direction of the electric field at point (0, 5)?
The electric field at point (0, 5) is in the positive y direction.
500

How much work is done by a 9-volt battery when -3 coulombs of charge flows through a circuit from the negative terminal to the positive terminal?

27 joules of work is done.

500

A 0.01 farad capacitor has a charge of +/-500 coulombs on its plates. What is the voltage across the capacitor?

The voltage is 50,000 volts.