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- 1. Multiple Choice
Hans Christan Oersted, one of leading scientist of 19th century played a crucial role in understanding _________
Electric current
Magnetism
Electromagnetism
Electricmagnetism
- 2. Multiple Choice
The unit of what is named oersted in honour of Hans Oersted
Magnetic field strength
Magnetic field
Magnetism
Electromagnetism
- 3. Fill in the Blank
What is variable resistance also called?
- 4. Multiple Choice
Define Maxwell's Corkscrew rule.
Consider ourselves driving a Corkscrew in direction of current, then direction of rotation of Corkscrew is direction of magnetic field
Consider ourselves holding a corkscrew in our hand so the Corkscrew is direction of magnetic field and hands in direction of current.
Consider ourselves driving a Corkscrew in direction of magnetic field, then direction of rotation of Corkscrew is direction of current.
All options are correct.
- 5. Multiple Choice
Magnetic field produced by a current carrying wire at a given point depends directly on _________
Electricity
Electric current
Magnetism
Strength of magnetic field
- 6. Multiple Choice
Weak ion currents that travel along nerve cell in our body produces __________
Magnetic Field
Magnetism
Electricity
Electrons
- 7. Multiple Choice
What is full form of MRI?
Magnetic Radiology Imaging
Magneto Ray Idometry
Medical Radiometer Instrument
Magnetic Resonance Imaging
- 8. Multiple Choice
A :- Magnetic field produced
our body is very weak
R :- and it is about one
Billionth of earth's magnetic field
Both A and R are correct and R is correct explaination of A
Both A and R are correct but R is not correct explaination of A
A is true but R is false
Both A And R are false
- 9. Fill in the Blank
The soft Iron core, on which the coil is wound, plus the coils is called ______________
- 10. Multiple Choice
Which scientist suggested that the magnet must also exert an equal and opposite force on the current?
Andre Marie Ampere
Hans Oersted
Michael Faraday
Alessandro Volta
- 11. Multiple Choice
What is formula for magnetic field?
Tesla meter/Ampere
Tesla meter/Volts
Tesla ampere/meter
Tesla meter/second
- 12. Multiple Choice
The relative strength of magnetic field is show by
Degree of closeness of field lines
Size of magnetic field
Amount of current flowing
Length of field lines
- 13. Fill in the Blank
A generator is also called
- 14. Multiple Choice
Dynamo works on the principle of
Electro magnetic induction
Conversion of energy to electricity
Magnetic effects of electric current
Heating effects of current
- 15. Multiple Choice
Two parallel conductors A and B of equal lengths carry currents I and 10I respectively in the same direction. Then
A and B repel each other with same force
A and B attract each other with same force
A will attract B, but B will repel A
A and B attract each other with different face.
- Answer choicesTagsAnswer choicesTags