Questions

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20 questions · auto-graded multiple-choice test.

MCQ 11 Mark
Electrons flow from …………… terminal to …………… terminal in a conductor when a potential difference is applied.
  • Negative to positive
  • B
    Neutral to positive
  • C
    Positive to negative
  • D
    Positive to neutral
Answer
Correct option: A.
Negative to positive
Negative to positive
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MCQ 21 Mark
Good conductors contain a large number of ………….. .
  • A
    Protons
  • B
    Neutrons
  • Free Electrons
  • D
    Gravitons
Answer
Correct option: C.
Free Electrons
Free Electrons
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MCQ 41 Mark
To decrease the effective resistance in a circuit, the resistances are connected in ………….. .
  • A
    Series
  • Parallel
  • C
    Reversed
  • D
    Disconnect
Answer
Correct option: B.
Parallel
parallel
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MCQ 51 Mark
Resistances are connected in …………… so as to pass the same current through them.
  • Series
  • B
    Parallel
  • C
    Reversed
  • D
    Disconnect
Answer
Correct option: A.
Series
Series
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MCQ 61 Mark
Current stops flowing when potential difference between two ends of a wire becomes ………….. .
  • Zero
  • B
    Positive
  • C
    Negative
  • D
    Higher
Answer
Correct option: A.
Zero
Zero
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MCQ 71 Mark
The conventional direction of flow of current is from …………… terminal to …………… terminal.
  • A
    Negative to positive
  • B
    Neutral to positive
  • Positive to negative
  • D
    Positive to neutral
Answer
Correct option: C.
Positive to negative
Positive to negative
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MCQ 81 Mark
The flow of …………… constitutes the electric current in a wire.
  • A
    Protons
  • B
    Neutrons
  • Electrons
  • D
    Gravitons
Answer
Correct option: C.
Electrons
Electrons
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MCQ 91 Mark
…………… is the amount of charge flowing through a particular cross sectional area in unit time.
  • Electric current
  • B
    Ampere
  • C
    Volt
  • D
    Force
Answer
Correct option: A.
Electric current
Electric current
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MCQ 101 Mark
A current flows through a circuit due to the difference in …………… between two points in the conductor.
  • A
    Gravity
  • Potential
  • C
    Resistance
  • D
    Resistance
Answer
Correct option: B.
Potential
Potential
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MCQ 111 Mark
The …………… wire is either yellow or green in colour.
  • A
    Live
  • B
    Neutral
  • Earth
  • D
    Fuse
Answer
Correct option: C.
Earth
Earth
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MCQ 121 Mark
The following is true for identical bulbs connected in parallel.
  • A
    All bulbs glow with unequal brightness.
  • B
    If one bulb is non-functional, all will stop working.
  • All bulbs glow with equal brightness.
  • D
    Bulbs function for longer time.
Answer
Correct option: C.
All bulbs glow with equal brightness.
All bulbs glow with equal brightness.
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MCQ 131 Mark
P and Q are two wires of same length and different cross-sectional areas and made of same material. Name the property which is same for both the wires.
  • Resistivity
  • B
    Resistance
  • C
    Current
  • D
    Both (a) and (b)
Answer
Correct option: A.
Resistivity
Resistivity
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MCQ 141 Mark
In order to measure the electric current flowing through a circuit, we connect …………… with the circuit.
  • A
    a voltmeter in parallel
  • B
    a voltmeter in series
  • C
    an ammeter in parallel
  • an ammeter in series
Answer
Correct option: D.
an ammeter in series
an ammeter in series
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MCQ 151 Mark
If a P.D. of 12 V is applied across a 3Ω resistor then the current passing through it is ………….. .
  • A
    36 A
  • 4A
  • C
    0.25 A
  • D
    15 A
Answer
Correct option: B.
4A
4A
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MCQ 161 Mark
Resistivity is the specific property of a ………….. .
  • A
    Area of cross-section
  • B
    Temperature
  • C
    Length
  • Material
Answer
Correct option: D.
Material
Material
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MCQ 171 Mark
The voltage difference in India between the live and neutral wires is about ………….. .
  • A
    110 V
  • 220 V
  • C
    440 V
  • D
    60 V
Answer
Correct option: B.
220 V
220 V
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MCQ 181 Mark
$1$ kilowatt hr = …………… joules.
  • A
    $4.6 \times 10^6$
  • $3.6 \times 10^6$
  • C
    $30.6 \times 10^6$
  • D
    $3.6 \times 10^5$
Answer
Correct option: B.
$3.6 \times 10^6$
$3.6 \times 10^6$
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MCQ 191 Mark
To increase the effective resistance in a circuit the resistors are connected in ………….. .
  • Series
  • B
    Parallel
  • C
    Both ways
  • D
    None of these
Answer
Correct option: A.
Series
Series
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