Electricity, Magnetism, Circuits, and Ohm's Law Practice Test

Which factor does NOT affect the strength of a magnetic field?

• Distance from the magnet
• Size of the magnet
• Color of the magnet
• Number of coils in an electromagnet

Tags

NGSS.MS-PS2-3

What happens to the strength of an electric force as the distance between charged objects increases?

• It increases
• It decreases
• It remains constant
• It fluctuates randomly

Tags

NGSS.MS-PS2-3

In an electromagnet, how can you increase its strength?

• Increase the temperature
• Decrease the electric current
• Increase the electric current/voltage OR number of loops in wire
• Use a thinner wire

Which statement about static electricity is correct?

• It only occurs in moving charges
• It is not affected by humidity
• It can cause objects to attract or repel
• It always flows in a continuous current

What determines the direction of a magnetic field around a wire?

• The material of the wire
• The length of the wire
• The direction of the electric current
• The thickness of the wire

Which of the following factors can increase the strength of a magnetic field?

• Decreasing the number of coils
• Increasing the distance from the magnet
• Using a stronger magnet
• Changing the color of the magnet

Tags

NGSS.MS-PS2-3

What is the result of increasing the number of coils in an electromagnet?

• The magnetic field strength decreases
• The magnetic field strength increases
• The magnetic field becomes unstable
• The magnetic field remains unchanged

Tags

NGSS.MS-PS2-3

Which statement accurately describes electric forces?

• They always attract objects
• They depend on the charge and distance between objects
• They are unaffected by the medium between charges
• They only occur between charged objects and metals

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the outcome when two like charges are brought close together?

• They attract each other
• They repel each other
• They neutralize each other
• They have no effect on each other

Tags

NGSS.MS-PS2-3

How does the strength of a magnetic field change with the distance from the magnet?

• It increases with distance
• It decreases with distance
• It remains constant regardless of distance
• It reverses direction with distance

Tags

NGSS.MS-PS2-3