21.1 - Inducing Currents

In the figure, if the wire were moved to the left instead of the right, what would the direction of the magnetic force on it be?

• into the page

• down

• up

• out of the page

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A 0.30-m long straight wire moves at a constant speed of 9.5 m/s perpendicular to a magnetic field of strength 0.083 T. What EMF is induced in the wire?

• 0.48 V

• 1.2 V

• 2.6 V

• 0.24 V

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A wire 15 m long moves through a magentic field of 1.0 T. The wire moves at a constant speed of 5.7 m/s in a direction perpendicular to the magnetic field. What EMF is induced in the wire?

• 2.6 V

• 86 V

• 43 V

• 61 V

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A changing magnetic field can produce a(n)__________.

• electric current

• resistor

• spark of electricity

• force

Tags

NGSS.HS-PS2-5

What is the unit for EMF?

• C/J

• V

• N

• N m

Tags

NGSS.HS-PS3-2

You want to generate an EMF of 2.6 V by moving a wire at 3.0 m/s through a 0.040-T magnetic field. If you keep the wire perpendicular to the magnetic field, what length of wire should you use?

• 22 m

• 0.035 m

• 0.046 m

• 11 m

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

__________ is the generation of current due to relative motion between a wire and a magnetic field.

• Magnetic flux

• Electromagnetic induction

• Electrolysis

• Electrospectrometry