NEW
Font size
WorksheetsElectricity and Magnetism
Total questions: 20
Worksheet time: 15mins
The current in a hair dryer measures 15.0 Amps. The resistance of the appliance is 8.0 ohms. What is the voltage?
120 V
0.5 V
7.0 V
1800 V
Which of the following represents Ohm’s law?
I = V / R
V = I x R
R = V x I
V = I / R
If you break a bar magnet in half, each half...
contains one magnetic pole.
becomes a bar magnet with two poles.
becomes unmagnetized.
is only temporarily magnetized.
What creates a magnetic field?
charged particles that do not move
moving electric charges
gravity
an isolated magnetic pole
What would happen if you broke a bar magnet into 8 pieces?
You would have 8 half magnets
You would have 4 complete magnets
You would have 8 complete magnets
They wouldn't be magnets anymore
How are electromagnets different from permanent magnets?
magnets can be turned on/off
you can turn an electromagnet on/off
magnets are more powerful
magnets have a North and South pole
The negatively charged particle in an atom is a(n):
Electron
Proton
Neutron
Oligtron
The motion of electrons is called
power
induction
current
amps
Voltage is
the potential electrical energy or push that makes electrons flow
causes a short circuit with electrical energy
is the term used for rate of charge flow
Wastes energy by allowing current to flow
