Physics
Grade-10
Easy
Question
The strength of the magnetic field inside a long current carrying solenoid is:
- More at the ends than at the centre
- Minimum in the middle
- The same on all points
- Found to increase from one end to the other
Hint:
The magnetic field lines inside a current carrying solenoid are parallel and equidistant
The correct answer is: The same on all points
The magnetic field lines inside a current carrying solenoid are parallel and equidistant which means the strength of magnetic field is uniform inside the solenoid i.e. same at all points.
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An electromagnet is based on:
An electromagnet is based on:
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Read the following statements and choose the correct option:
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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.
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Match the following with the correct response.
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(2) Compass needle (B) Temporary magnet
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Electromagnet loses its magnetic property when:
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A bar magnet is equivalent to:
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The nature of magnetic field line passing through the center of current carrying circular loop is:
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The symbol ⊗ shows that there is:
The symbol ⊗ shows that there is:
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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:
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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?
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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:
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In a uniform magnetic field, the field lines are:
In a uniform magnetic field, the field lines are:
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Electromagnets are special types of magnets in which magnetism is produced by:
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