WorksheetsElectrical systems
Total questions: 20
Worksheet time: 11mins
key
What is resistance?
the rate at which a charge is flowing
the material's tendency to resist flow of electrons
the difference of charge between 2 points
it is futile
What is the unit we use to measure electric current?
ampere
ohm
volt
newton
what is an electric cell?
a device that converts mechanical energy into electrical energy
a device that turns stored chemical energy into electrical energy
a device that devours electrical energy
a device that converts static electricity into mechanical energy
What is voltage?
the rate of flow of charge
the difference in potential between 2 points
the amount of available charge
What is the unit of measurement for resistance?
Voltage
Ampere
Watts
Ohms
How to you calculate the total resistance in a series circuit?
R1 + R2 + R3
R1 - R2 - R3
1/R1 + 1/R2 + 1/R3
R1 = R2 = R3
How do you calculate total resistance in a parallel circuit?
R1 + R2 + R3
R1 - R2 - R3
1/R1 +1/R2 + 1/R3 = 1/RT
R1 = R2 = R3
What is the equivalent or total resistance (Re) across this circuit?
3 kΩ
10 kΩ
13 kΩ
18 kΩ
If a circuit has two resistors in parallel both are 4Ω, what is the total resistance of the circuit?
1Ω
2Ω
4Ω
8Ω
in which circuit is the lamp brightest
1
2
3
All the same
in which circuit is the lamp brightest
1
2
3
All the same
As the length of a wire increases, the resistance of the wire will
increase
decrease
stay the same
As the diameter of a wire increases, the resistance of the wire will
increase
decrease
stay the same
What other factor of a wire could affect its resistance?
Material its made of
How shiny it is
Colour
Which wire has more resistance (long or short)?
