Worksheets8.PS2.1 Study Guide
Total questions: 20
Worksheet time: 40mins
The electric force between two charges increases when
both charges become negative.
both charges become positive.
the charges get closer together.
the charges get farther apart.
When the current in an electromagnet increases, what does its magnetic field do?
changes direction
does not change
gets stronger
gets weaker
When a bar magnet moves in a wire loop, what does the wire loop produce?
an electric current
electrical resistance
ferromagnetic elements
magnetic domains
Where on a magnet is the magnetic field the strongest?
both magnetic poles
center of the magnet
magnetic north pole
magnetic south pole
Which energy transformation occurs in a generator?
electric energy to light energy
electric energy to mechanical energy
mechanical energy to electric energy
thermal energy to electric energy
What is the transfer of energy in when you plug in a motor and it spins?
chemical to mechanical
electrical to mechanical
mechanical to electrical
physical to potential
In an electric motor, a force is applied to the electromagnet by
a battery
a commutator
an electric current
a permanent magnet
Many bicycles have generators that have a light that can be powered without a battery. Currently, no electric current is flowing through the circuit shown. What needs to happen to cause an electric current to flow through the circuit?
A smaller wire needs to be used.
A bigger light bulb needs to be used.
The magnet's north pole needs to point up.
The magnet needs to be in constant motion.
