WorksheetsElectricity and Magnetism
Total questions: 20
Worksheet time: 8mins
The unit of measurement for _____ is the ohm.
voltage
current
resistance
electrical power
Homes built today are wired in...
parallel circuits
series circuits
two-way circuits
non-conductive series pathways
The increase or decrease in voltage moves through a device called a:
commutator
motor
generator
transformer
Materials through which electricity flows easily are known as:
semiconductors
actuator
insulator
conductor
Current that reverses direction in a regular way is called:
direct current
magnetic current
circuit current
alternating current
The voltage in the outlets in your home is:
120 Hz
60 V
120 V
60 Hz
Dry cell batteries produces....
alternating current
the same current as a generator
open ciruit
direct current
Materials that are poor conductors of electricity are called:
resistors
conductors
insulators
absorbers
Alternating current (AC) and direct current (DC) are different in:
amount of charge flowing
direction of charge flow
kind of charge flow
amount of energy per unit of charge
Which of the following will conduct electricity the best. (more than one answer may be chosen)
metal pot
plastic fork
ceramic coffee mug
copper wire
Where are the magnetic lines the strongest and why?
the poles, the magnetic field lines are further apart at the poles
between the poles, the magnetic field lines are closer together between the poles
between the poles, the magnetic field lines are further apart
the poles, the magnetic field lines are closer together at the poles
Look at the picture above. Does this represent a closed or open circuit?
Open
Closed
A conductor to transfer electrons.
What is: the plastic container of a wet cell battery
What is: the carbon rod in a dry cell battery
What is: a circuit with 2 or more pathways
Identify the type of circuit shown above as:
closed current
series
open
parallel
Identify the type of circuit shown above as:
closed cicuit
open
series
parallel
A large discharge of electricity from the sky due to a build-up of electrons by friction between the clouds is called:
static electricity
thunder
anti-gravitational static discharge
lightning
Rotating a magnet inside a coil of wires is known as:
charging by contact
electromagnetism
charging by induction
Tommy Copper hand wraps
Look at the diagram shown. Explain what will happen if there are two positive charges near each other.
they will attract
they will repel
nothing will happen
Look at the diagram shown. Explain what will happen if there are two positive charges near each other.
they will attract
they will repel
nothing will happen
Determine how much current will flow through a series of wires where there are 250 volts and a resistance of 5 ohms.
1250 amps
50 amps
50 Ω
1250 Ω
