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Physics MCQ

Current Electricity · ICSE STD 10 (ICSE - English Medium). 14 questions.

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14 questions · timed · auto-graded

MCQ 11 Mark
Tick (✓) the correct choice among the following :

There are 500 turns and 2000 turns in the primary and secondary coil of a
transformer respectively. If th e output voltage is 1000 V, how large is the
input voltage?

  • ✓
    250 v
  • B
    500 v
  • C
    1000 v
  • D
    2000 v
Answer
Correct option: A.
250 v
250 v
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MCQ 21 Mark
Tick (✓) the correct choice among the following :

In fig .XY is at right angles to the magnetic field. The direction in
which XY should be moved to induce an electron flow in the direction Y to X as indicated by the arrow is

  • A
    Along the direction of XY
  • B
    Towards N and perpendicular to XY
  • C
    Towards S and perpendicular to XY
  • ✓
    Upwards and perpendicular to XY
Answer
Correct option: D.
Upwards and perpendicular to XY
Upwards and perpendicular to XY
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MCQ 31 Mark
Tick (✓) the correct choice among the following :
Which of the following changes would enable a millimeter to be used as a
direct current ammeter reading upto 1 A?
  • ✓
    connecting a large resistor in series
  • B
    connecting a large resistor in parallel
  • C
    connecting a small resistor in series
  • D
    connecting a small resistor in parallel
Answer
Correct option: A.
connecting a large resistor in series
connecting a large resistor in series
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MCQ 41 Mark
Tick $(✓)$ the correct choice among the following :
Consider two cases of two parallel current carrying conductors. Current in
th e same direction and currents in th e opposi te directions will produce
  • A
    Attraction and repulsion respectively
  • ✓
    Repulsion and attraction respectively
  • C
    Attraction in both cases
  • D
    Repulsion in both cases
Answer
Correct option: B.
Repulsion and attraction respectively
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MCQ 51 Mark
Tick (✓) the correct choice among the following :
(a) A strong short bar magnet is dropped into a solenoid connected to a
galvanometer as shown in fig . The galvanometer shows a deflection to the left when the current in the coil as seen from above is counter clockwise. Which one of the following shows the correct deflection of the galvanometer when the magnet is at posi tions A, Band C.
  • ✓
    At A At B At C
    Left left left
  • B
    At A At B At C
    Left zero zero
  • C
    At A At B At C
    Left zero right
  • D
    At A At B At C
    Left right left
Answer
Correct option: A.
At A At B At C
Left left left
At A At B At C
Left left left
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MCQ 61 Mark
The device used for measuring potential difference is
  • A
    Potentiometer
  • B
    Ammeter
  • C
    Galvanometer
  • ✓
    Voltmeter
Answer
Correct option: D.
Voltmeter
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MCQ 71 Mark
The work done in moving unit positive charge across two points in an electric circuit is a measure of
  • ✓
    Potential difference
  • B
    Resistance
  • C
    Power
  • D
    Current
Answer
Correct option: A.
Potential difference
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MCQ 81 Mark
Tick(✓) the correct choice in the following:
A three pin plug is connected to the lead for a 1 kW electric iron to be
used on a 250 V supply. Which of the following statements is not correct?
  • A
    The fuse should be fitted in the l ive wire
  • B
    The live wire is coloured brown
  • ✓
    A 13 ampere fuse is the most suitable rating to use
  • D
    The yellow and green wire should be connected to the earth pin
Answer
Correct option: C.
A 13 ampere fuse is the most suitable rating to use
A 13 ampere fuse is the most suitable rating to use.
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MCQ 91 Mark
Tick $(✓)$ the correct choice in the following:The outer casing of an electric iron is generally connected to earth in order
to
  • ✓
    Protect the user from electric shock by short circuiting and consequently breaking the circuit
  • B
    Prevent the fuse from burning out
  • C
    Protect the iron
  • D
    Complete the electrical circuit to the iron
Answer
Correct option: A.
Protect the user from electric shock by short circuiting and consequently breaking the circuit
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MCQ 101 Mark
Tick $(✓)$ the correct choice in the following:Which of the following quantities has the same value for all electrical
appliances connected to the ring main circuit in a house?
  • A
    Power
  • ✓
    Voltage
  • C
    Resistance
  • D
    Current
Answer
Correct option: B.
Voltage
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MCQ 111 Mark
Tick(✓) the correct choice in the following:
24 watt, 12 volt head lamp is fully lit by connecting it to a 12 volt
battery. The working resistance of the lamp is
  • A
    $5 \Omega$
  • B
    $4 \Omega$
  • ✓
    $6 \Omega$
  • D
    $2 \Omega$
Answer
Correct option: C.
$6 \Omega$
$6 \Omega$
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MCQ 121 Mark
Tick $(✓)$ the correct choice in the following:
Ohm's law is applicable to
  • A
    Discharge of electricity through gases
  • B
    Diode value
  • ✓
    All menallic conductors
  • D
    Carbon compounds
Answer
Correct option: C.
All menallic conductors
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MCQ 131 Mark
Tick $(✓)$ the correct choice in the following:
When the length of a conductor is doubled the resistance of the conductor
will
  • A
    Remain same
  • ✓
    Double in value
  • C
    Become four times
  • D
    Become half
Answer
Correct option: B.
Double in value
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MCQ 141 Mark
Tick(✓) the correct choice in the following:
In the circuit shown in the following fig, the e.m.f. of the cell is 4 volts, the current
flowing through the resistor is
Image
  • ✓
    $\frac{2}{3} \mathrm{~A}$
  • B
    $2 \mathrm{~A}$
  • C
    $1 \frac{1}{2} \mathrm{~A}$
  • D
    $1 \frac{1}{3} \mathrm{~A}$
Answer
Correct option: A.
$\frac{2}{3} \mathrm{~A}$
$\frac{2}{3} \mathrm{~A}$
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