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- 1. Multiple Choice
Inside the magnet, the field lines moves
From north to south
From south to north
away from south pole
away from north pole
- 2. Multiple Choice
By which instrument, the presence of magnetic field be determined
Magnetic needle
Ammmeter
Galvanometer
Voltmeter
- 3. Multiple Choice
The pattern of the magnetic field produced by the straight current carrying conductor is
in the direction opposite to the current
in the direction parallel to the wire
circular around the wire
in the same direction of current
- 4. Multiple Choice
The strength of magnetic field around a current carrying conductor is
Inversely proportional to the current but directly proportional to the square of the distance from wire.
Directly proportional to the current and inversely proportional to the distance from wire.
Directly proportional to the distance and inversely proportional to the current.
Directly proportional to the current but inversely proportional to the square of the distance from wire.
- 5. Multiple Choice
The nature of magnetic field line passing through the centre of current carrying circular loop is
circular
ellipse
parabolic
straight line
- 6. Multiple Choice
The factors on which one magnetic field strength produced by current carrying solenoid depends on
Magnitude of current
Number of turns
Nature of core material
All of the above
- 7. Multiple Choice
A soft iron bar is introduced inside the current carrying solenoid. The magnetic field inside the solenoid
will increase
will remains the same
will decrease
will become zero
- 8. Multiple Choice
Earth wire carries
Current
Voltage
No current
None of the above
- 9. Multiple Choice
Which are the characteristics of fuse element?
High conductivity
Low melting point
Do not burn due to oxidation
All of the above.
- 10. Multiple Choice
The most important safety method used for protecting home appliances from short circuiting or overloading is
Earthing
Use of fuse
Use of stabilizers
Use of electric meter
- 11. Multiple Choice
Who has stated the Right Hand Thumb Rule?
Orested
Fleming
Maxwell
Einstein
- 12. Multiple Choice
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 other
- 13. Multiple Choice
Which of the following factors affect the strength of force experience by a current carrying conductor in a uniform magnetic field?
magnetic field strength
magnitude of current in a conductor
length of the conductor within magnetic field
All of the above.
- 14. Multiple Choice
Overloading is due to
Insulation of wire is damaged
fault in the appliances
accidental hike in supply voltage
All the above
- 15. Multiple Choice
What should be the core of an electromagnet?
soft iron
hard iron
rusted iron
none of the above
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