Download 1. Electric field lines indicate A. Both direction and relative strength B

1. Electric field lines indicate
5. Positive charges _____ one another.
A. Both direction and relative strength
A. Repel
B. Neither direction nor strength
B. Attract
2. Whether or not charges will move in a
material depends partly on how tightly _____
are held in the atoms of the material.
6. The electric force between two objects
_____ when the distance between them
decreases.
A. Electrons
A. Increases
B. Neutrons
B. Decreases
3. The resistance of an insulator is
7. Which of the following is a negatively
charged particle?
A. Moderate
A. Proton
B. High
B. Electron
4. Appliances connected so that they form a
single pathway for charges to flow are
connected in a
A. Series circuit
B. Parallel circuit
8. Electric field lines show the strength and
_____ of an electric field.
A. Polarization
B. Direction
9. An electric cell is a source of electric
current because of a _____ between the
terminals.
13. In most cases, increasing the temperature
of an object will _____ its resistance.
A. Increases
A. Semiconductor
B. Potential Difference
10. The rate at which charges move through a
conductor is called
B. Decreases
14. A circuit breaker acts as a switch
creating a(n) _____ circuit when current is
too high.
A. Current
A. Open
B. Electrical Potential Energy
B. Closed
11. _____ is the opposition posed by a
material to the flow of current.
15. There is a repulsive force between two
charged objects when
A. Resistance
A. Their charges are of like sign.
B. Ampere
B. They have the same number of
electrons.
12. Which of the following has the lowest
resistance?
16. Electric force varies depending on the
A. Semiconductor
A. Charge and distance between
charged objects.
B. Superconductor
B. Charge and mass of charged objects.
17. Batteries typically have
A. One positive and one negative
terminal
21. When there is an equal amount of
positive and negative charges on an object,
the object is
A. Supercharged
B. Two negative terminals
B. Neutral
18. Resistance is caused by
22. The electric force between charged
objects is
A. Internal friction
A. Either attractive or repulsive.
B. Electron charge
B. Repulsive only
19. The SI unit of resistance is the
23. Potential difference is measured in
A. Ohm
A. Amperes
B. Joule
B. Volts.
20. There is an attractive force between two
charged objects when
24. Current is the rate at which charges move
through a(n)
A. Their charges are of unlike sign
A. Conductor
B. They have the same number of
protons.
B. Insulator
25. A device that protects a circuit from
current overload is called a
29. Where are Earth’s magnetic poles are
located?
A. Resistor
A. Canada and Antarctica
B. Circuit Breaker
B. at the geographic poles
26. The north pole of one magnet will be
attracted to
30. In a magnetized substance, the domains
A. Are randomly distributed.
A. Another north pole
B. A South Pole
27. Magnetic force
B. Line up more uniformly in one
direction.
31. An electric motor and a generator are
similar in that both
A. Is strongest near a magnet’s poles.
B. Is weakest near a magnet’s poles
A. Transform energy into a different
form.
B. Create Energy.
28. What causes a compass needle to point to
geographic north?
A. The pole of the compass is attracted
to Earth’s Geographic North Pole
B. The compass needle aligns with
Earth’s magnetic field.
32. Generators convert
A. Mechanical energy to electrical
energy.
B. Electrical energy to mechanical
energy.
33. _____ poles of a magnet repel
37. The magnetic field of a magnet is
strongest
A. Like
A. At the center
B. Opposite
B. Near the poles
34. A region where a magnetic force can be
detected is a(n)
38. Earth’s magnetic field lines run from
A. Geographic south to geographic
North
A. Potential circuit.
B. Magnetic east to magnetic west.
B. Magnetic field.
35. The north poles of two different magnets
will _____ one another.
39. Magnetic force is the force due to
interacting
A. Magnetic fields.
A. Attract
B. poles
B. Repel
36. The _____ North and South poles are not
aligned exactly with the magnetic north and
south poles of Earth.
A. Geographic
B. Migratory
40. A device that produces a magnetic field
by wrapping wire into a coil is a
A. Solenoid
B. Domain.
41. The direction of the magnetic field
produced by a current-carrying wire can be
determined using
A. The Right hand rule
B. The Left hand rule
42. The magnetic field produced by a
solenoid is similar to that of a
45. The north pole of one magnet will be
A. Repelled by the north pole of
another magnet.
B. Repelled by the south pole of
another magnet.
46. Unlike magnetic poles always
A. Repel each other
A. Pole
B. Attract each other
B. Bar Magnet
43. Magnetism is caused by
47. Groups of atoms that align to form small,
magnetized regions in a material are
A. Opposite Charges
B. Moving Charges.
A. Magnetic poles
B. Magnetic Domains
44. An electric motor converts electrical
energy into
48. A device that converts electrical energy
into mechanical energy is a(n)
A. Mechanical Energy
A. Generator
B. Magnetic Force
B. Electric motor
49. Light travels as
50. Like magnetic poles always
A. Electromagnetic waves
C. Repel each other
B. Electrical waves
D. Attract each other