Electricity Class 10 MCQ. We covered all the Electricity Class 10 MCQ in this post for free so that you can practice well for the exam.
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MCQ on Electricity for Class 10 Students
Identify the incorrect statement: Magnetic field lines due to a circular coil is
(a) circular near the wire
(b) straight along the axis
(c) leaving both the planes
(d) perpendicular to the plane
Option c – leaving both the planes
A moving charge experiences a maximum force when the angle between its velocity and the magnetic field is
(a) 0°
(b) 30°
(c) 60°
(d) 90°
Option d – 90°
Alloys are usually used in electrical heating devices because
(a) the resistivity of an alloy is generally higher than that of constituent elements
(b) alloys do not oxidize readily at high temperatures
(c) Both (a) and (b)
(d) Neither (a) nor (b)
Option c – Both (a) and (b)
Magnetic field lines caused by a solenoid
(a) are curves
(b) start at the north and end at the south
(c) closed loops
(d) uniform everywhere
Option c – closed loops
A horizontal power line carries current from east to west. The direction of the magnetic field at a point below the wire is directed
(a) upward
(b) downward
(c) towards the north
(d) toward south
Option d – toward south
The region surrounding a magnet, in which the force of the magnet can be detected is said to have a
(a) a magnetic field
(b) an electric field
(c) magnetic poles
(d) None of these
Option a – a magnetic field
A coil of rectangular dimensions is rotated in a magnetic field. The flux-associated, changes due to the change in
(a) number (N)
(b) area (A)
(c) strength of field (B)
(d) the angle between B and A
Option d – the angle between B and A
A small rod is wound around with certain coils and current is allowed for some time. When the rod was taken out, it was found not to attract iron. The material of the rod may be
(a) copper
(b) cobalt
(c) steel
(d) nickel
Option a – copper
Two students make a solenoid each with the same length but the number of turns is in the ratio of 1 : 4 As they carry the same current, the ratio of the magnetic field strength will be
(a) 1 : 2
(b) 1 : 4
(c) 3 : 2
(d) 4 : 1
Option b – 1 : 4
The power rating of an electric appliance indicates
(a) The rate of consumption of electrical energy
(b) the amount of heat evolved
(c) the Brightness of the light
(d) the Quality of the appliance
Option a – The rate of consumption of electrical energy
Regarding a transformer which of the following is incorrect?
(a) The principle is induction
(b) Varying potential is required
(c) Energy is produced or lost
(d) Performs based on the number of turns
Option c – Energy is produced or lost
At every point of a current-carrying circular loop, the concentric circles representing the magnetic fields around it would become
(a) larger and larger as we move away from the wire
(b) so large at the center of the circular loop that they look like straight lines
(c) Both (a) and (b)
(d) Neither (a) nor (b)
Option c – Both (a) and (b)
In order to find the direction of induced current one uses
(a) Fleming’s left-hand rule
(b) Fleming’s right-hand rule
(c) Right-hand thumb rule
(d) Screw rule
Option b – Fleming’s right-hand rule
MRI stands for
(a) Magnets Resonant Imaging
(b) Magnetic Resonance Imaging
(c) Magnetic Radar Imaging
(d) Magnets Radial Imagic
Option b – Magnetic Resonance Imaging
Which of the following instruments is used to measure magnetic field?
(a) Thermometer
(b) Pyrometer
(c) Hygrometer
(d) Flux meter
Option d – Flux meter
A conductor of length / carrying a current I placed in a perpendicular magnetic field experiences 5 N the of force. If the length is doubled with a halved magnetic field. The force experienced with doubled current is
(a) 5N
(b) 10N
(c) 15 N
(d) 2.5 N
Option b – 10N
A straight conducting wire is placed parallel to and over a compass needle. The deflection in the needle
(a) becomes opposite when the direction of the current is reversed
(b) remains in the same direction even on reversing the direction of current
(c) keeps fluctuating on passage of current in any. direction
(d) Is negligible in reversing the direction of current
Option a – becomes opposite when the direction of the current is reversed
When two or more resistors are connected in parallel
(a) The current passing through each resistor is the same
(b) The potential difference across each resistor is the same
(c) Both of the above
(d) None of the above
Option b – The potential difference across each resistor is the same
When no current is passed through a conductor
(a) the free electrons do not move
(b) the average speed of a free electron over a large period of time is zero
(c) the average velocity of a free electron over a large period of time is zero
(d) the average of the velocities of all the free electrons at an instant is zero
Option c – the average velocity of a free electron over a large period of time is zero
The current which is assumed to be flowing in a circuit from a positive terminal to a negative is called
(a) direct current
(b) pulsating current
(c) conventional current
Option c – conventional current
The direction of magnetic lines of force of a bar magnet is
(a) from the south to the north pole
(b) from the north to the south pole
(c) across the bar magnet
(d) from south to north pole inside the magnet and from north to south pole outside the magnet
Option d – from south to north pole inside the magnet and from north to south pole outside the magnet
We covered all the electricity class 10 MCQ above in this post for free so that you can practice well for the exam.
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