Gr12 revision

Electromagnetic induction is change in ___________________. 

• surface area
• magnetic poles
• magnetic flux

Voltage can be induced in a wire by

• a. moving the wire near a magnet.
• b. moving a magnet near the wire.
• c. changing the current in a nearby wire.
• d. all of these

Tags

NGSS.HS-PS2-5

What would happen if I move a bar magnet in and out of a coil of copper wire?

• Electric current would disappear 
• The magnet would explode 
• Electric current will flow through the wire
• It would produce a gravitational field

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A magnet can move in a coil of wire to produce electricity in which system?

• Generator
• Motor
• Magnet
• Transformer

Tags

NGSS.HS-PS2-5

Which action will increase the deflection of the galvanometer pointer?

• The magnetic pole is reversed

• The number of turns of coils is increased

• The coil is made from insulated wire

• The magnet is slowly pushed into the coil

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What type of process is shown?

• Electromagnet

• Electric motor

• Electric generator

• Electromagnetic induction

a motor converts electrical current into

• chemical energy

• chemical force

• mechanical force

• mechanical life

electric current can cause a magnetic field

• true

• false

Tags

NGSS.HS-PS2-5

electric generators converts mechanical force into

• mechanical energy

• magmatism

• electric current

• electric energy

true or false- motors and generators are opposites

• true

• false