Multiple Choice Identify the
choice that best completes the statement or answers the question.


1.

T5A02 Electrical power is measured in which of the
following units?
a.  Volts  c.  Ohms  b.  Watts  d.  Amperes 


2.

T5A10 Which term describes the rate at which
electrical energy is used?
a.  Resistance  c.  Power  b.  Current  d.  Voltage 


3.

T5C08 What is the formula used to calculate
electrical power in a DC circuit?
a.  Power (P) equals voltage (E) multiplied by current
(I)  c.  Power (P) equals voltage (E) minus current
(I)  b.  Power (P) equals voltage (E) divided by current
(I)  d.  Power (P) equals voltage (E) plus current
(I) 


4.

T5C09 How much power is being used in a circuit
when the applied voltage is 13.8 volts DC and the current is 10 amperes?
a.  138 watts  c.  23.8
watts  b.  0.7 watts  d.  3.8
watts 


5.

T5C10 How much power is being used in a circuit
when the applied voltage is 12 volts DC and the current is 2.5 amperes?
a.  4.8 watts  c.  14.5
watts  b.  30 watts  d.  0.208
watts 


6.

T5C11 How many amperes are flowing in a circuit
when the applied voltage is 12 volts DC and the load is 120 watts?
a.  0.1 amperes  c.  12
amperes  b.  10 amperes  d.  132
amperes 


7.

T5D01 What formula is used to calculate current in
a circuit?
a.  Current (I) equals voltage (E) multiplied by resistance
(R)  c.  Current (I) equals voltage (E) added to resistance
(R)  b.  Current (I) equals voltage (E) divided by resistance
(R)  d.  Current (I) equals voltage (E) minus resistance
(R) 


8.

T5D02 What formula is used to calculate voltage in
a circuit?
a.  Voltage (E) equals current (I) multiplied by resistance
(R)  c.  Voltage (E) equals current (I) added to resistance
(R)  b.  Voltage (E) equals current (I) divided by resistance
(R)  d.  Voltage (E) equals current (I) minus resistance
(R) 


9.

T5D03 What formula is used to calculate resistance
in a circuit?
a.  Resistance (R) equals voltage (E) multiplied by current
(I)  c.  Resistance (R) equals voltage (E) added to current
(I)  b.  Resistance (R) equals voltage (E) divided by current
(I)  d.  Resistance (R) equals voltage (E) minus current
(I) 


10.

T5D04 What is the resistance of a circuit in which
a current of 3 amperes flows through a resistor connected to 90 volts?
a.  3 ohms  c.  93
ohms  b.  30 ohms  d.  270
ohms 


11.

T5D05 What is the resistance in a circuit for which
the applied voltage is 12 volts and the current flow is 1.5 amperes?
a.  18 ohms  c.  8
ohms  b.  0.125 ohms  d.  13.5
ohms 


12.

T5D06 What is the resistance of a circuit that
draws 4 amperes from a 12volt source?
a.  3 ohms  c.  48
ohms  b.  16 ohms  d.  8
Ohms 


13.

T5D07 What is the current flow in a circuit with an
applied voltage of 120 volts and a resistance of 80 ohms?
a.  9600 amperes  c.  0.667
amperes  b.  200 amperes  d.  1.5
amperes 


14.

T5D08 What is the current flowing through a 100ohm
resistor connected across 200 volts?
a.  20,000 amperes  c.  2
amperes  b.  0.5 amperes  d.  100
amperes 


15.

T5D09 What is the current flowing through a 24ohm
resistor connected across 240 volts?
a.  24,000 amperes  c.  10
amperes  b.  0.1 amperes  d.  216
amperes 


16.

T5D10 What is the voltage across a 2ohm resistor
if a current of 0.5 amperes flows through it?
a.  1 volt  c.  2.5
volts  b.  0.25 volts  d.  1.5
volts 


17.

T5D11 What is the voltage across a 10ohm resistor
if a current of 1 ampere flows through it?
a.  1 volt  c.  11
volts  b.  10 volts  d.  9
volts 


18.

T5D12 What is the voltage across a 10ohm resistor
if a current of 2 amperes flows through it?
a.  8 volts  c.  12
volts  b.  0.2 volts  d.  20
volts 
