Magnetic effect of electric current

Hans Christan Oersted, one of leading scientist of 19th century played a crucial role in understanding _________

• Electric current

• Magnetism

• Electromagnetism

• Electricmagnetism

The unit of what is named oersted in honour of Hans Oersted

• Magnetic field strength

• Magnetic field

• Magnetism

• Electromagnetism

What is variable resistance also called?

(a)  

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.

Magnetic field produced by a current carrying wire at a given point depends directly on _________

• Electricity

• Electric current

• Magnetism

• Strength of magnetic field

Weak ion currents that travel along nerve cell in our body produces __________

• Magnetic Field

• Magnetism

• Electricity

• Electrons

What is full form of MRI?

• Magnetic Radiology Imaging

• Magneto Ray Idometry

• Medical Radiometer Instrument

• Magnetic Resonance Imaging

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

The soft Iron core, on which the coil is wound, plus the coils is called (a)  

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