Magnetic Field Strength Quiz

What is the SI unit of magnetic field strength?

• joule

• watt

• tesla

• ampere

How is magnetic field strength represented in equations?

• M

• F

• H

• B

What is the symbol used to represent magnetic field strength?

• B

• F

• H

• M

How is magnetic field strength measured?

• Magnetometer

• Barometer

• Thermometer

• Hygrometer

What factors affect the strength of a magnetic field?

• Color of the magnet, temperature, size of the magnet

• Number of people nearby, sound frequency, air pressure

• Material used, distance from the magnet, presence of other magnetic fields

• Shape of the magnet, time of day, type of surface

What is the significance of magnetic field strength in electromagnets?

• It determines the temperature of the electromagnet

• It determines the force exerted by the electromagnet and the ability to attract or repel other magnetic materials.

• It affects the taste of the electromagnet

• It determines the color of the electromagnet

How does the distance from a magnet affect the magnetic field strength?

• The magnetic field strength decreases

• The magnetic field strength increases

• The magnetic field strength remains constant

• The distance has no effect on the magnetic field strength

Discuss the applications of magnetic field strength in everyday life.

• Toaster ovens, hair dryers, and vacuum cleaners

• Refrigerators, dishwashers, and washing machines

• Electric motors, generators, MRI machines, and magnetic compasses

• Telescopes, microscopes, and binoculars

1) A wire carries a current, creating a magnetic field around itself as shown. The current in the wire is:

• A. Directed to the right

• A. Directed to the left

• A. Equal to the magnetic field

• In the same direction as the magnetic field

1) A solenoid with 500 turns, 0.10 m long, carrying a current of 4.0 A and with a radius of 10^2 m will have what strength magnetic field at its center?

• 31 x 10 ^{– 4} T

• 62 x 10 ^{– 4} T

• 125 x 10 ^{– 4} T

• 250 x 10 ^{– 4} T