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WorksheetsElectricity Review
Total questions: 20
Worksheet time: 10mins
Which of the following does NOT affect a material's resistance?
the type of material
temperature
Ohm's law
length of the wire
Which of the following wires would have the MOST resistance?
an aluminium wire 20 cm in diameter at 40 degrees Celsius
an aluminium wire 40 cm in diameter at 40 degrees Celsius
an aluminium wire 40 cm in diameter at 60 degrees Celsius
an aluminium wire 20 cm in diameter at 60 degrees Celsius
The amount of charge that moves through the filament of a light bulb in 3.0 s is 4.5 C. What is the current in the light bulb?
13.5 A
1.5 A
0.835 A
5.34 A
Which process will half the power dissipated by a resistor?
doubling the current while doubling the resistance
doubling the current while making the potential difference half as big
doubling the current and doubling the potential difference
doubling the current and making the resistance half as big
As the temperature in a wire goes up, ___.
the resistance and current go up.
the resistance goes up while the current goes down.
the resistance and current remain unchanged.
the resistance goes down while the current goes up.
As the length of a wire in a circuit decreases, ___.
the resistance decreases while the current increases.
the resistance increases while the current decreases.
the current and the resistance increase.
the current and the resistance decrease.
As the cross-sectional area of a wire increases, ___.
the resistance and current increase.
the resistance and the current decrease.
the resistance and the current remain unchanged.
the resistance decreases while the current increases.
In a series circuit, the ___ is equal for all resistors.
resistance
voltage
current
temperature
To find the equivalent resistance of a series circuit, ___.
RE = R1 + R2 + R3 ...
RE = 1/(1/R1 + 1/R2 + 1/R3 ...)
RE = R1 = R2 = R3 ...
RE = 1/R1 + 1/R2 + 1/R3 ...
To find the equivalent resistance of a parallel circuit,
RE = R1 + R2 + R3 ...
RE = 1 / (1/R1 + 1/R2 + 1/R3 ...)
RE = R1 = R2 = R3 ...
RE = 1/R1 + 1/R2 + 1/R3 ...
To find the total voltage in a series circuit, ___.
VT = V1 = V2 = V3 ...
VT = 1/ (1/V1 + 1/V2 + 1/V3 ...)
VT = V1 + V2 + V3 ...
VT = 1/V1 + 1/V2 + 1/V3 ...
To find the total voltage of a parallel circuit, ___.
VT = 1/ (1/V1 + 1/V2 + 1/V3 ...)
VT = 1/V1 + 1/V2 + 1/V3 ...
VT = V1 + V2 + V3 ...
VT = V1 = V2 = V3 ...
In a series circuit, if one light bulb goes out, ___.
the others are unaffected
the others go out
the other bulbs stay on and get brighter
the other bulbs stay on and get dimmer
A series circuit has two identical light bulbs connected to a 6V battery. Another series circuit has three identical light bulbs connected to a 6V battery. The circuit with ___ bulbs will be brighter.
two
three
Both circuits have the same brightness.
It cannot be determined
In a parallel circuit, if one light bulb goes out, ___.
the other bulbs are unaffected
the other bulbs go out
the other bulbs stay on but get brighter
the other bulbs stay on but get dimmer
When placing a voltmeter into a circuit, the voltmeter must be connected ___.
in parallel with whatever is being measured
in series with whatever is being measured
When placing an ammeter into a circuit, the ammeter must be connected ___.
in parallel with whatever is being measured
in series with whatever is being measured
Two resistors are placed in a series circuit. The same two resistors are placed in a parallel circuit. Which circuit will have the LEAST resistance?
Series
Parallel
Both circuits will have the same resistance.
There is no way to tell.
Two resisters of 6 ohms and 3 ohms are placed in a parallel circuit. Without doing any calculations, one should expect that the equivalent resistance of the circuit will be ___.
greater than 6 ohms
between 6 and 3 ohms
less than 3 ohms
equal to 3 ohms
An electrical circuit that has both series portions and parallel portions is referred to as a ___.
series circuit
parallel circuit
complex circuit
nonexistent
