EEE - Voltage, Current and Resistance Quiz (or) MCQ

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 Î©

B)

22 Î©

C)

2,200 Î©

D)

22,000 Î©

Correct Answer : 22,000 Î©

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 923â„¦ 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 Î©

B)

6,460 Î©

C)

6,800 Î©

D)

7,300 Î©

Correct Answer : 6,120 Î©

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 Î©

B)

126,000 Î©

C)

126,600 Î©

D)

132,000 Î©

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
= 0.5208â„¦.

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