Science
Explore the World of Magnetism and Current
Test your knowledge on the principles of magnetism and electricity with our engaging quiz! This quiz covers various topics related to magnetic fields, electromagnets, and the basics of electric circuits.
Whether you're a student looking to reinforce your learning or simply a curious mind, this quiz is designed for you. Get ready to:
- Challenge your understanding of magnetic fields.
- Learn about current flow and its safety measures.
- Discover the historical figures behind electromagnetic discoveries.
Q1 :-The magnetic field lines always begin from
N-pole and end on S-pole.
S-pole and end on N-pole.
Start from the middle and end at N-pole.
Start from the middle and end at S-pole.
Q2:-Magnetic lines of force inside current carrying solenoid are
Perpendicular to axis.
Along the axis and are parallel to each other.
Parallel inside the solenoid and circular at the ends.
Circular.
Q3:-A soft iron bar is introduced inside a current carrying solenoid.The magnetic field inside the solenoid
Will become zero.
Will increase.
Will decrease.
Will remain unaffected
Q4:- What should be the core of an electromagnet?
Soft iron
Hard iron
Rusted iron
None of above
Q5 :-Which device produces the electric current?
Generator
Galvanometer
Ammeter
Motor
Q6:-The most important safety method used for protecting home appliances from short circuiting or overloading is by
Earthing
Use of fuse
Use of stabilizers
Use of electric meter
Q7:-The strength of magnetic field inside a long current carrying straight solenoid is
More at the ends than at the centre
Minimum in the middle
Same at all points
Found to increase from one end to the other
Q8 :-In India the potential difference between live wire and neutral wire is
240 V
250 V
280 V
220 V.
Q9 :-The best material to make permanent magnets is
Aluminium
Soft iron
Copper
Alnico
Q10:-The north pole of Earth’s magnet is in the:
Geographical South
Geographical East
Geographical West
Geographical North
Q11 :- An electric fuse is used to prevent: i).Short circuit ii) Overload
Only A
Only B
Both A and B
None of these
Q12 :- At the time of short circuit, the current in the circuit:
Reduces substantially
Does not change
Increases heavily
Varies continuously
Q13 :-A DC generator is based on the principle of:
Electrochemical induction
Electromagnetic induction
Magnetic effect of current
Heating effect of current
Q14 :-The magnetic effect of current was discovered by:
Maxwell
Fleming
Oersted
Faraday
Q15 :-The magnetic field lines:
Intersect at right angles to one another
Intersect at an angle of 450 to each other
Do not cross one another
Cross at an angle of 600
Q16:An induced current is produced when a magnet is moved into a coil. The magnitude of induced current does not depend on:
The speed with which the magnet is moved
The number of turns of the coil
The resistivity of the wire of the coil
The strength of the magnet
Q17 :-Circuit Breaker Device which can be used in place of fuse in domestic electric wiring is called:
CBD
DCB
MCD
MCB
Q18 :-The shape of the earth's magnetic field resembles that of an imaginary:
U-shaped magnet
Straight conductor carrying current
Current-carrying circular coil
Bar magnet
Q19 :- Small current in a circuit is detected by
Galvanometer
Solenoid
Voltmeter
Fleming’s left hand rule
Q20 :-We can induce the current in a coil by
Moving the coil in a magnetic field
By changing the magnetic field around it
By changing the orientation of the coil in the magnetic field
All of above
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