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Free download in PDF Voltage Current and Resistance Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(1)
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
(2)
A wiper is the sliding contact in a
[A]
switch
[B]
photoconductive cell
[C]
thermistor
[D]
potentiometer
(3)
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]
10.5 C
[B]
105 C
[C]
3.4 C
[D]
34 C
(4)
A multimeter measures
[A]
current
[B]
voltage
[C]
resistance
[D]
current, voltage, and resistance
Answer: current, voltage, and resistance
(5)
The unit of electrical charge is the
[A]
volt
[B]
ampere
[C]
joule
[D]
coulomb
(6)
A material that does not allow current under normal conditions is a(n)
[A]
insulator
[B]
conductor
[C]
semiconductor
[D]
valence
(7)
The colored bands for a 4,700 ohm resistor with a ten percent tolerance are
[A]
yellow, violet, red, gold
[B]
yellow, violet, orange, gold
[C]
yellow, violet, red, silver
[D]
orange, violet, red, silver
Answer: yellow, violet, red, silver
(8)
When the current is 2.5 A, how many coulombs pass a point in 0.2 s?
[A]
12.5 C
[B]
1.25 C
[C]
0.5 C
[D]
5 C
(9)
Eight-tenths coulomb passes a point in 4 s. The current in amperes is
[A]
1.6 A
[B]
16 A
[C]
2 A
[D]
0.2 A
(10)
A two-terminal variable resistor is known as a
[A]
potentiometer
[B]
thermistor
[C]
rheostat
[D]
wiper
(11)
A thermistor is a type of
[A]
switch
[B]
resistor
[C]
battery
[D]
power supply
(12)
Electrons in the outer orbit are called
[A]
nuclei
[B]
valences
[C]
waves
[D]
shells
(13)
The conductance of an 8 ohm resistance is
[A]
12.5 mS
[B]
8 mS
[C]
12 S
[D]
125 mS
(14)
When placed close together, two positively charged materials will
[A]
attract
[B]
become neutral
[C]
become negative
[D]
repel
(15)
Which of the following is not a type of energy source?
[A]
generator
[B]
rheostat
[C]
solar cell
[D]
battery
(16)
The maximum resistance value for a brown, red, yellow, gold resistor is
[A]
126,000
[B]
126,600
[C]
114,000
[D]
132,000
(17)
Current flows in a circuit when
[A]
a switch is opened
[B]
a switch is closed
[C]
the switch is either open or closed
[D]
there is no voltage
Answer: a switch is closed
(18)
The unit of electrical charge is the
[A]
coulomb
[B]
joule
[C]
volt
[D]
watt
(19)
Materials with lots of free electrons are called
[A]
conductors
[B]
insulators
[C]
semiconductors
[D]
filters
(20)
An ohmmeter is an instrument for measuring
[A]
current
[B]
voltage
[C]
resistance
[D]
wattage
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