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WorksheetsOhm's Law
Total questions: 14
Worksheet time: 4hrs 30mins
What parts of the circuit represent the (a) source and (b) load?
(a) Es (b) S1
(a) Es (b) R1
(a) S1 (b) R1
(a) S1 (b) Es
Which of the following terms describes the circuit condition?
Partially shorted
Partially open
Shorted
Open
If circuit voltage is held constant, circuit current will react in what manner as the resistance (a) increases, and (b) decreases?
(a) Increase (b) decrease
(a) Increase (b) increase
(a) Decrease (b) decrease
(a) Decrease (b) increase
If circuit resistance is held constant, circuit current will react in what manner as the voltage (a) increases, and (b) decreases?
(a) Increase (b) decrease
(a) Increase (b) increase
(a) Decrease (b) decrease
(a) Decrease (b) increase
According to Ohm’s law, what formula should be used to calculate circuit voltage if resistance and current value are known?
Formula #1
Formula #2
Formula #3
Formula #4
If the current is 15 amperes, what is the value of the voltage?
50 V
75 V
100 V
150 V
If the voltage is 200 volts, what is the value of the current?
10 A
20 A
30 A
40 A
Which of the following circuit quantities can be varied ONLY by varying one of the other circuit quantities?
Voltage
Current
Resistance
Each of the above
Which of the following is a correct formula for determining power in an electrical circuit?
Formula #1
Formula #2
Formula #3
Each of the above
What is the current in a circuit with 15 ohms of resistance that uses 135 watts of power?
10 A
15 A
3 A
9 A
What is the total power used by a 15-ohm resistor with 4 amps of current?
60 W
240 W
360 W
900 W
What type of resistor should be used in a circuit with 60 watts?
Carbon
Wirewound
Precision
Composition
How much total energy is converted by a 1-horsepower motor in 10 hours?
7.46 kWh
8.32 kWh
8.59 kWh
9.32 kWh
A 1-horsepower motor runs for 10 hours. If the energy used by the motor is 9.5 kWh, what is the efficiency of the motor?
.981
.904
.876
.785
