NEW
Font size
WorksheetsScience 9 Electricity Background Knowledge
Total questions: 13
Worksheet time: 13mins
A circuit needs three things to operate. Which of the following is not one of those things?
fuse
load
cell
wires
A high voltage is more dangerous than a high amperage.
True
False
Current flowing through a wire creates a magnetic field around the wire.
True
False
Electrical energy is the energy
stored in chemicals
of charged particles
of all the moving particles in a substance
built up by friction
If you have a string of lights and one bulb malfunctions resulting in the whole string of lights not working, then the circuit is
series
parallel
In a battery, electricity flows from the positive terminal to the negative terminal.
True
False
Lightning is an example of electrical discharge.
True
False
Ohm's Law states
the resistance of a conductor changes
the current is proportional to the voltage
electrical energy is conserved
all of the above
The electricity in your household is
AC or alternating current
BC or basic current
CC or constant current
DC or direct current
The electricity producing cells that we use in everyday devices are called dry cells because
they run out or "dry up"
the chemicals inside are a paste
they are not meant to interact with water
the electrodes are metal
The Law of Electrical charges states that opposite charges attract and like charges repel.
True
False
The longer and thinner a wire, the more resistance it has.
True
False
You should never remove the third prong from a three-pronged plug.
True
False
