EEE : Voltage, Current and Resistance MCQs with Answers

1 .

The conductance of an 8 ohm resistance is

A) 8 mS

B) 12 S

C) 12.5 mS

D) 125 mS

Correct Answer : 125 mS

2 .

If there is 6 A of current through the filament of a lamp, how many coulombs of charge move through the filament in 1.75 s?

A) 3.4 C

B) 10.5 C

C) 34 C

D) 105 C

Correct Answer : 10.5 C

3 .

Free electrons make current possible.

A) True

B) False

C) Can Not Say

D) None of the above

Correct Answer : True

4 .

A material that does not allow current under normal conditions is a/an

A) Valence

B) Insulator

C) Conductor

D) Semiconductor

Correct Answer : Insulator

5 .

A free electron is a valence electron that has broken away from its parent atom.

A) True

B) False

C) Can Not Say

D) None of the above

Correct Answer : True

6 .

The atomic number is the number of neutrons in the nucleus.

A) True

B) False

C) Can Not Say

D) None of the above

Correct Answer : False

7 .

An ohmmeter is an instrument for measuring

A) Voltage

B) Current

C) Wattage

D) Resistance

Correct Answer : Resistance

8 .

The nominal value of a brown, black, yellow, and gold resistor is 100,000 ohms.

A) True

B) False

C) Can Not Say

D) None of the above

Correct Answer : True

9 .

The unit of electrical charge is the

A) Volt

B) Joule

C) Watt

D) Coulomb

Correct Answer : Coulomb

10 .

The symbol used for representing Independent sources

A) Triangle

B) Square

C) Circle

D) Diamond

Correct Answer : Circle

Explanation : Independent sources are represented by circle
Dependent sources are represented by Diamond.

11 .

Controlled sources are also known as

A) Ideal sources

B) Independent sources

C) Voltage sources

D) Dependent sources

Correct Answer : Independent sources

Explanation : Voltage V = dw/dq and its SI unit is Volt.

12 .

Inductor is _____ element.

A) Polar

B) Passive

C) Active

D) Linear

Correct Answer : Passive

Explanation : Passive element means it could not generate electricity.

13 .

A neutral atom with an atomic number of five has how many electrons?

A) 1

B) 5

C) None

D) Depends on the type of atom

Correct Answer : 5

14 .

Resistance limits the current.

A) True

B) False

C) Can Not Say

D) None of the above

Correct Answer : True

15 .

A multimeter measures

A) Voltage

B) Current

C) Resistance

D) Current, voltage, and resistance

Correct Answer : Current, voltage, and resistance

16 .

A potentiometer is a twoterminal variable resistor.

A) True

B) False

C) Can Not Say

D) None of the above

Correct Answer : False

17 .

The current in a given circuit is not to exceed 24 A. Which value of fuse is best?

A) 5 A

B) 10 A

C) 24 A

D) 20 A

Correct Answer : 24 A

18 .

An ammeter is an electrical instrument used to measure

A) Current

B) Voltage

C) Resistance

D) None of the above

Correct Answer : Current

19 .

A red, red, orange, gold resistor has a nominal value of

A) 2.2 Ω

B) 22 Ω

C) 2,200 Ω

D) 22,000 Ω

Correct Answer : 22,000 Ω

20 .

A twoterminal variable resistor is known as a

A) Wiper

B) Rheostat

C) Thermistor

D) Potentiometer

Correct Answer : Rheostat

21 .

A wiper is the sliding contact in a

A) Switch

B) Thermistor

C) Potentiometer

D) Photoconductive cell

Correct Answer : Potentiometer

22 .

Eighttenths coulomb passes a point in 4 s. The current in amperes is

A) 0.2 A

B) 1.6 A

C) 2 A

D) 16 A

Correct Answer : 0.2 A

23 .

Current flows in a circuit when

A) A switch is opened

B) A switch is closed

C) There is no voltage

D) The switch is either open or closed

Correct Answer : A switch is closed

24 .

The opposing capacity of materials against the current flow is

A) Inductance

B) Susceptance

C) Conductance

D) Resistance

Correct Answer : Resistance

Explanation : The opposing capacity of materials against the current flow is resistance.

25 .

The conductance of a 923Ω resistance is

A) 1.08 * 10^-3 mho

B) 1.08 * 10^-4 mho

C) 1.02 * 10^-3 mho

D) 1.02 * 10^-4 mho

Correct Answer : 1.08 * 10^-3 mho

Explaination : c=1/R =1/923 = 1.08 * 10^-3 mho

26 .

The minimum resistance value for a blue, gray, red, silver resistor is

A) 6,120 Ω

B) 6,460 Ω

C) 6,800 Ω

D) 7,300 Ω

Correct Answer : 6,120 Ω

27 .

When placed close together, two positively charged materials will

A) Attract

B) Repel

C) Become neutral

D) Become negative

Correct Answer : Repel

28 .

A circuit breaker is a

A) Fuse

B) Switch

C) Resistor

D) Resettable protective device

Correct Answer : Resettable protective device

29 .

An open circuit is one that has a complete current path.

A) True

B) False

C) Can Not Say

D) None of the above

Correct Answer : False

30 .

A neutral atom is one with an equal number of protons and electrons.

A) True

B) False

C) Can Not Say

D) None of the above

Correct Answer : True

31 .

The maximum resistance value for a brown, red, yellow, gold resistor is

A) 114,000 Ω

B) 126,000 Ω

C) 126,600 Ω

D) 132,000 Ω

Correct Answer : 126,000 Ω

32 .

When the current is 2.5 A, how many coulombs pass a point in 0.2 s?

A) 1.25 C

B) 12.5 C

C) 0.5 C

D) 5 C

Correct Answer : 0.5 C

33 .

An ammeter is connected across the current path.

A) True

B) False

C) Can Not Say

D) None of the above

Correct Answer : False

34 .

The current passing through a circuit is 7.2A and the power at the terminals is 27 watts. Existence is ___________ ohms.

A) 0.5972

B) 0.5792

C) 0.5402

D) 0.5208

Correct Answer : 0.5208

Explanation : p = vi
= (iR) i
= i² R
R = P/i²
=27/ (7.2)²
= 0.5208Ω.

35 .

Relation between power, voltage and conductance

A) V = P².G

B) V = P²/G

C) P = V²/G

D) P = V² G

Correct Answer : P = V² G

Explaination : P = vi
= v (v/R)
= v²/R
= v²G.

36 .

Materials with lots of free electrons are called

A) Conductors

B) Filters

C) Insulators

D) Semiconductors

Correct Answer : Conductors

37 .

The colored bands for a 4,700 ohm resistor with a ten percent tolerance are

A) Yellow, violet, red, gold

B) Orange, violet, red, silver

C) Yellow, violet, red, silver

D) Yellow, violet, orange, gold

Correct Answer : Yellow, violet, red, silver

38 .

Which of the following is not a type of energy source?

A) Rheostat

B) Battery

C) Solar cell

D) Generator

Correct Answer : Rheostat

39 .

A thermistor is a type of

A) Switch

B) Resistor

C) Battery

D) Power supply

Correct Answer : Resistor

40 .

A voltmeter is connected across the current path.

A) True

B) False

C) Can Not Say

D) None of the above

Correct Answer : True

41 .

Electrons in the outer orbit are called

A) Shells

B) Waves

C) Nuclei

D) Valences

Correct Answer : Valences

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