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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
Which of the following statements about magnetic field lines around a circular coil is incorrect?
(a) They are circular close to the wire
(b) They appear straight along the central axis
(c) They emerge from both surfaces of the coil
(d) They are perpendicular to the plane of the coil
Option c – They emerge from both surfaces of the coil
A charged particle in motion feels the greatest magnetic 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 commonly used in heating appliances because
(a) Their resistivity is higher than that of pure Metals
(b) They resist oxidation even at high temperatures
(c) Both of the above
(d) Neither of the above
Option c – Both of the above
The magnetic field generated by a solenoid forms
(a) Curved paths
(b) Lines from the north pole to the south pole
(c) Closed loops
(d) A uniform pattern throughout
Option c – Closed loops
A current-carrying wire runs horizontally from east to west. What is the direction of the magnetic field at a point directly beneath it?
(a) Upward
(b) Downward
(c) Northward
(d) Southward
Option d – Southward
The region where a magnet’s influence is felt is known as
(a) Magnetic field
(b) Electric Field
(c) Magnetic poles
(d) None of these
Option a – Magnetic field
When a rectangular coil rotates in a magnetic field, the magnetic flux through it changes due to a variation in
(a) The number of turns
(b) The coil’s area
(c) The field’s strength
(d) The angle between the field and coil area
Option d – The angle between the field and coil area
A rod wound with wire and carrying current fails to attract iron. This indicates the rod material is likely
(a) Copper
(b) Cobalt
(c) Steel
(d) Nickel
Option a – Copper
Two students construct solenoids of equal length, but the turns are in a 1:4 ratio. If both carry the same current, what is the ratio of the magnetic field strength?
(a) 1 : 2
(b) 1 : 4
(c) 3 : 2
(d) 4 : 1
Option b – 1 : 4
The power rating labeled on an electric device indicates
(a) How fast it uses electrical energy
(b) The Heat it produces
(c) Its brightness
(d) The build quality of the product
Option a – How fast it uses electrical energy
Which statement about transformers is false?
(a) They work on the principle of electromagnetic induction
(b) They require changing voltage
(c) They create or destroy energy
(d) Their performance depends on coil turns
Option c – They create or destroy energy
What happens to the concentric magnetic field lines around a current-carrying circular loop?
(a) They grow larger with distance from the wire
(b) They appear straight at the center of the loop
(c) Both of the above
(d) None of the above
Option c – Both of the above
Which rule helps determine the direction of the induced current?
(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
What is the full form of MRI?
(a) Magnets Resonant Imaging
(b) Magnetic Resonance Imaging
(c) Magnetic Radar Imaging
(d) Magnets Radial Imagic
Option b – Magnetic Resonance Imaging
Which instrument is used to measure magnetic fields?
(a) Thermometer
(b) Pyrometer
(c) Hygrometer
(d) Flux meter
Option d – Flux meter
A wire of length l carrying current I in a magnetic field experiences a force of 5 N. If the length is doubled, the field is halved, and the current is doubled, the resulting force will be
(a) 5 N
(b) 10 N
(c) 15 N
(d) 2.5 N
Option b – 10 N
A straight wire is placed parallel above a compass. What happens to the needle when the direction of current is reversed?
(a) The deflection direction reverses
(b) The deflection direction remains unchanged
(c) The needle keeps moving randomly
(d) The change in direction is barely noticeable
Option a – The deflection direction reverses
In a parallel circuit connection of resistors
(a) Each resistor carries the same current
(b) The voltage across all resistors is identical
(c) Both statements are true
(d) Neither statement is true
Option b – The voltage across all resistors is identical
When no electric current flows through a conductor
(a) Free electrons remain stationary
(b) The long-term average speed of a free electron is zero
(c) The long-term average velocity of a free electron is zero
(d) The instantaneous average velocity of all electrons is zero
Option c – The long-term average velocity of a free electron is zero
The current considered to flow from the positive terminal to the negative terminal in a circuit is called
(a) Direct current
(b) Pulsating current
(c) Conventional current
Option c – Conventional current
What is the direction of magnetic field lines around a bar magnet?
(a) From south to north outside the magnet
(b) From north to south outside the magnet
(c) Across the body of the magnet
(d) From south to north inside and north to south outside the magnet
Option d – From south to north inside and north to south outside the magnet
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