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Worksheets26104 Electrical Review
Total questions: 20
Worksheet time: 54mins
Name
Class
Date
1.
What is the total resistance of the circuit in the figure above?
a)
50 ohms
b)
30 ohms
c)
19 ohms
d)
29 ohms
2.
Given: A circuit has a voltage of 100 volts across five resistors in parallel (5, 14, 21, 25, and 100 ohms). The total current is _____.
a)
20.2 amps
b)
25.3 amps
c)
12.71 amps
d)
36.9 amps
3.
Which of the following is considered a voltage rise?
a)
A motor
b)
A resister
c)
The source
d)
A diode
4.
In a parallel circuit, the total line current must equal _____.
a)
the branch current divided by the total resistance
b)
the sum of the branch currents
c)
the branch current divided by the number of resistors
d)
zero
5.
How many amps of current would flow through the circuit in the figure above?
a)
4.14
b)
5.21
c)
3.24
d)
2
6.
There are four resistors in a circuit with an applied voltage of 120V. The voltage drops across three resistors is 15V each. What is the voltage drop across the fourth resistor?
a)
75V
b)
120V
c)
15V
d)
45V
7.
Two resistances of 30 and 25 ohms are connected in parallel. In series with this combination is a 40-ohm resistance, and in parallel with this total combination is a 28-ohm resistance. Given a voltage of 1.28 volts, the total current flowing through the circuit is _____.
a)
60mA
b)
70mA
c)
95mA
d)
55mA
8.
The total voltage in a circuit with voltage drops of 15V, 25V, and 20V is _____.
a)
20V
b)
180V
c)
120V
d)
60V
9.
What is the total resistance of the circuit in the figure above?
a)
24.17 ohms
b)
70.41 ohms
c)
15.32 ohms
d)
120.12 ohms
10.
If R3 was removed from the circuit in the figure above, how many amps of current would flow through the circuit?
a)
12
b)
15
c)
5
d)
4
11.
If a circuit with a source of 200 volts is connected across four parallel 50-ohm resistors, the current through each resistor is _____.
a)
2 amps
b)
3 amps
c)
4 amps
d)
1 amps
12.
What is the total resistance of three resistors in parallel with values of 4 ohms, 10 ohms, and 25 ohms?
a)
1.50 ohms
b)
3.43 ohms
c)
2.56 ohms
d)
2.25 ohms
13.
The statement that total current entering a point must equal total current leaving that point best describes _____.
a)
Ohm's law
b)
Coulomb's total current law
c)
Kirchhoff's current law
d)
The Theory of Relativity
14.
The voltage drop across the parallel resistors shown in the figure above is _____.
a)
100 volts
b)
20.7 volts
c)
62.1 volts
d)
17.3 volts
15.
What is the total resistance of three resistors in parallel with values of 2 ohms, 8 ohms, and 14 ohms?
a)
2.32 ohms
b)
2.24 ohms
c)
1.44 ohms
d)
2.65 ohms
16.
According to Kirchhoff's current law, the current in a parallel circuit is equal to _____.
a)
the applied voltage
b)
the total voltage drop
c)
the sum of the currents in each branch
d)
zero
17.
The total resistance of four resistors in parallel with values of 3, 10, 25, and 50 ohms is _____.
a)
2.75 ohms
b)
1.66 ohms
c)
3.33 ohms
d)
2.03 ohms
18.
A circuit in which two or more components are connected equally across the same voltage source is a _____.
a)
parallel circuit
b)
series-parallel circuit
c)
series circuit
d)
resistive circuit
19.
According to Kirchhoff's voltage law, the total voltage drop in a circuit is equal to the _____.
a)
According to Kirchhoff's voltage law, the total voltage drop in a circuit is equal to the _____.
b)
total current in the circuit
c)
current divided by resistance
d)
total resistance in the circuit
20.
What is the resistance of a light bulb that uses 15 watts of power when placed across a 15-volt battery?
a)
1.5 ohms
b)
150 ohms
c)
50 ohms
d)
15 ohms
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