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- 1. Multiple Choice
What is the direction of the magnetic field around a current-carrying wire?
Parallel to the wire
Perpendicular to the wire
In the same direction as the current
Opposite to the direction of the current
- 2. Multiple Choice
Which of the following materials is not considered a magnetic material?
Iron
Nickel
Cobalt
Copper
- 3. Multiple Choice
What is the principle behind electromagnetism?
Magnetic fields can generate electric currents
Electric currents can generate magnetic fields
Magnetic fields can only exist in the presence of electric fields
Electric fields can only exist in the presence of magnetic fields
- 4. Multiple Choice
What happens to the magnetic field strength as you move away from a magnet?
It increases
It decreases
It remains constant
It first increases, then decreases
- 5. Multiple Choice
Which of the following is not a characteristic of magnetic poles?
Like poles repel each other
Unlike poles attract each other
They can exist independently of each other
They are located at the ends of a magnet
- 6. Multiple Choice
What is the shape of a uniform magnetic field?
Circular
Spiral
Parallel lines
Radial
- 7. Multiple Choice
How does Earth's magnetic field protect us?
By keeping the atmosphere in place
By deflecting solar wind
By absorbing UV radiation
By warming the planet
- 8. Multiple Choice
What causes the aurora borealis?
The interaction of Earth's magnetic field with the Moon
The reflection of sunlight off the polar ice caps
The interaction of solar wind with Earth's magnetic field and atmosphere
The reflection of light from nearby planets
- 9. Multiple Choice
What is the right-hand rule used to determine?
The direction of the magnetic field around a current-carrying wire
The polarity of a magnet
The direction of electric current in a circuit
The strength of a magnetic field
- 10. Multiple Choice
Which of the following statements about magnetic force is true?
It can only attract, not repel
It is strongest at the midpoint of a magnet
It acts at a distance
It is always perpendicular to the magnetic field
- 11. Multiple Choice
What is the effect of inserting an iron core into a current-carrying coil?
Decreases the magnetic field strength
Increases the magnetic field strength
Has no effect on the magnetic field strength
Reverses the direction of the magnetic field
- 12. Multiple Choice
In which direction does Earth's magnetic field point?
From the geographic north to south
From the geographic south to north
From the magnetic north to south
From the magnetic south to north
- 13. Multiple Choice
What is the SI unit of magnetic field strength?
Ampere (A)
Tesla (T)
Coulomb (C)
Ohm (Ω)
- 14. Multiple Choice
Which of the following is a property of magnetic lines of force?
They intersect each other
They repel each other
They never intersect each other
They originate from the south pole and end at the north pole
- 15. Multiple Choice
What is the effect of a magnetic field on a moving electric charge?
It exerts a force on the charge
It increases the charge's mass
It has no effect on the charge
It decreases the charge's mass
- 16. Multiple Choice
What is the direction of the magnetic field to the north of a wire carrying current to the east?
south
west
up
down
- 17. Multiple Choice
What would be the velocity of an electron that feels a force of 3 x 10-12 N to the east when traveling through a uniform magnetic field of 5 T oriented upward?
3.75 x 10^6 m/s, south
3.75 x 10^6 m/s, north
2.67 x 10^-7 m/s, south
2.67 x 10^-7, north
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