Physics
Grade-10
Easy
Question
An electromagnet is based on:
- Chemical effect of electric current
- Heating effect of electric current
- Electro-chemical effect of electric current
- Magnetic effect of electric current
Hint:
All electromagnets work on the principle that an electric current in a wire produces a magnetic field.
The correct answer is: Magnetic effect of electric current
- An electromagnet is a piece of metal at the core with wire wound over it. When the current flows through the wire, the metal acts like a magnet. It is based on the magnetic effect of electric current. The metal is magnetized by the current.
Related Questions to study
Physics
Read the following statements and choose the correct option:
Assertion: The strength of an electromagnet depends on the magnitude of current flowing through the solenoid.
Reason: Electromagnet is a permanent magnet.
Read the following statements and choose the correct option:
Assertion: The strength of an electromagnet depends on the magnitude of current flowing through the solenoid.
Reason: Electromagnet is a permanent magnet.
PhysicsGrade-10
Physics
Match the following with the correct response.
(1) Magnetic field inside the solenoid (A) Small bar magnet capable of rotating freely
(2) Compass needle (B) Temporary magnet
(3) Solenoid with soft iron core (C) Uniform
Match the following with the correct response.
(1) Magnetic field inside the solenoid (A) Small bar magnet capable of rotating freely
(2) Compass needle (B) Temporary magnet
(3) Solenoid with soft iron core (C) Uniform
PhysicsGrade-10
Physics
Read the following statements and choose the correct option:
Statement A: The magnetic field produced by a current-carrying loop has no poles.
Statement B: Like poles of magnets repel each other.
Read the following statements and choose the correct option:
Statement A: The magnetic field produced by a current-carrying loop has no poles.
Statement B: Like poles of magnets repel each other.
PhysicsGrade-10
Physics
The magnetic field lines outside a solenoid carrying current:
The magnetic field lines outside a solenoid carrying current:
PhysicsGrade-10
Physics
The material of the core of an electromagnet is generally:
The material of the core of an electromagnet is generally:
PhysicsGrade-10
Physics
Electromagnet loses its magnetic property when:
Electromagnet loses its magnetic property when:
PhysicsGrade-10
Physics
A bar magnet is equivalent to:
A bar magnet is equivalent to:
PhysicsGrade-10
Physics
The nature of magnetic field line passing through the center of current carrying circular loop is:
The nature of magnetic field line passing through the center of current carrying circular loop is:
PhysicsGrade-10
Physics
The symbol ⊗ shows that there is:
The symbol ⊗ shows that there is:
PhysicsGrade-10
Physics
On reversing the direction of current in a wire, the magnetic field produced by it:
On reversing the direction of current in a wire, the magnetic field produced by it:
PhysicsGrade-10
Physics
Which of the following should be used as the core of an electromagnet?
Which of the following should be used as the core of an electromagnet?
PhysicsGrade-10
Physics
When an electric current passes through a solenoid, it acts as a/an:
When an electric current passes through a solenoid, it acts as a/an:
PhysicsGrade-10
Physics
In a uniform magnetic field, the field lines are:
In a uniform magnetic field, the field lines are:
PhysicsGrade-10
Physics
Electromagnets are special types of magnets in which magnetism is produced by:
Electromagnets are special types of magnets in which magnetism is produced by:
PhysicsGrade-10
Physics
The observations made by Faraday from the experiments on electromagnetic induction is (are) that ___________.
I. The deflection in the galvanometer increases when a strong magnet is used.
II. The induced current in the coil is alternating in nature.
The observations made by Faraday from the experiments on electromagnetic induction is (are) that ___________.
I. The deflection in the galvanometer increases when a strong magnet is used.
II. The induced current in the coil is alternating in nature.
PhysicsGrade-10
