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WorksheetsCircuits
Total questions: 26
Worksheet time: 13mins
Conventional current is the flow of
positive charge
negative charge
Current is
the same in all circuit elements in a series circuit.
the rate of flow of charge.
is measured in amperes.
All of the above are true.
The variable used for current is
C
A
I
V
Batteries produce
direct current (DC) and alternating current (AC).
AC only.
DC only.
The current coming of the wall outlet is
direct current (DC).
alternating current (AC).
If you need 3.0 V and you have two 1.5 V batteries
wire them in series.
wire them in parallel.
Electrical resistance is measured in
amperes (A)
coulombs (C)
volts (V)
Ω (ohms)
Why are household circuits wired in parallel?
All devices need to consume the same amount of power.
All devices need the same amount of current.
All devices need to operate independently of each other.
All devices need the same amount of resistance.
Why is a short circuit dangerous?
No resistance means high voltage.
No resistance means low voltage.
No resistance means high current.
No resistance means low current.
A fuse mill melt or a circuit breaker will trip when
the current is too small.
the resistance is too large.
the voltage is too large.
the current is too large.
As resistors are added to a series circuit, the total resistance
increases.
decreases.
stays the same.
As resistors are added to a series circuit, the total current
increases.
decreases.
stays the same.
As resistors are added to a parallel circuit, the total resistance
increases.
decreases.
stays the same.
As resistors are added to a parallel circuit, the total current
increases.
decreases.
stays the same.
What is the current through a 240 Ω resistor connected to 120 V?
2 A
0.5 A
240 A
120 A
What is the voltage across a 100 Ω resistor with 4 amps of current flowing through it?
25 V
0.004 V
400 V
none of the above
What is the resistance of a lamp operating at 120 V and using 0.5 A of current?
240 Ω
60 Ω
0.5 Ω
120.5 Ω
What is the equivalent resistance of three 120 Ω resistors wired in parallel?
120 Ω
360 Ω
40 Ω
60 Ω
What is the equivalent resistance of three 120 Ω resistors wired in series?
120 Ω
360 Ω
40 Ω
60 Ω
The equivalent resistance of resistors in parallel is always
greater than the smallest resistor.
smaller than the smallest resistance.
greater than the greatest resistance.
none of the above
How much power is consumed by a light bulb connected to 10 V with 4 A running through it?
40 J
40 W
2.5 J
2.5 W
What do you know about the brightest bulb in a series circuit?
The bulb has the greatest voltage.
The bulb has the lowest voltage.
What do you know about the brightest bulb in a series circuit?
The bulb has the greatest resistance.
The bulb has the lowest resistance.
What is the total resistance?
4 Ω
13 Ω
6 Ω
2 Ω
What is the current through the 4 Ω resistor?
1 A
2 A
3 A
6 A
What is the voltage across the 3 Ω resistor?
6 V
3 V
1 V
2 V
