Electromagnetic Forces and Fields

Like poles...

• Repel

• Attract

Tags

NGSS.3-PS2-3

Which of the following are acceptable units for measuring the magnitude of a magnetic field?

• Hertz

• Teslas

• Amperes

• Newtons

Tags

NGSS.HS-PS2-5

A current is applied to an object, such as a wire. What is true about the scenario?

• A magnetic field is created.

• The gravitational field is doubled.

• Magnetic force is created in the direction of the object.

• A moving charge opposite to the direction of the object is created.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Two wires carry equal amounts of current out of the page as in the image shown. What is the magnetic field at the point exactly between the two wires?

• The magnetic field is 2x stronger compared to that of one wire, magnetic field going out of the page.

• There is no magnetic field.

• The magnetic field is 2x stronger compared to that of one wire, magnetic field going into the page.

• The magnetic field acting upon the point is of the same magnitude on both sides

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A 3cm long wire carrying 2A of current is inside a magnetic field of 4 Teslas. What is the magnetic force on the wire?

• 24N to the right.

• 24N out of the screen (Towards you).

• 0.24N into the screen. (Direction you are facing)

• There is no force.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following is true?

• A current creates a magnetic field.

• A magnetic field creates a current in a wire.

• A change in magnetic field creates a current in a wire.

• Like sides of a magnet attract.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Wire 1 carries 2A of current. Wire 2 carries 4A of current. Both wires are 3m long and 5cm apart. What is the magnetic force on Wire 2? (the permeability of free space is 1.25663706 × 10^-6 m kg s^-2 A^-2)

• 9.6 * 10^-7 N into the page

• 9.6 * 10^-5 N to the right

• 9.6*10^-7 N to the right

• 9.6 * 10^-5 N into the page

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A negative charge of 2mC moves to the left at 2m/s through a 3T magnetic field pointing upwards. What is the resulting force?

• 0.012 N into the page

• 0.012 N out of the page

• 1.2 N out of the page

• 1.2 N to the left

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What are some uses of the electromagnetic force?

• Renewable energy sources

• Headphones

• Holding together atomic nuclei

• Pushing someone

Tags

NGSS.HS-PS2-5

NGSS.HS-PS4-5

The magnetic field of an object is always proportional to...

• How long a current has been running through the object.

• The magnitude of the resistance the object is giving.

• The magnitude of the current running through the object.

• The amount of geese it touched that day.

Tags

NGSS.HS-PS2-5