Science Quiz 83

This is a timed quiz. You will be given 120 seconds to answer all questions. Are you ready?

120

Strength of an electromagnet can be increased by

increasing the cross-sectional area

increasing the number of turns

increasing current supply

all above methods

Correct! Wrong!

Magnetism of a magnet can be destroyed by

heating

hammering

by inductive action of another magnet

by all above methods

Correct! Wrong!

One maxwell is equal to

100 webers

10 webers

1000 webers

none

Correct! Wrong!

When an iron piece is placed in a magnetic field

the iron piece will break

the magnetic lines of force will bend away from their usual paths in order to go away from the piece

the magnetic lines of force will bend away from their usual paths in order to pass through the piece

the magnetic field will not be affected

Correct! Wrong!

Which of the following is not a unit of flux?

Telsa

Maxwell

Weber

none

Correct! Wrong!

A magnetic field exists around

copper

aluminium

moving charges

none

Correct! Wrong!

Which of the following is a vector quantity?

Magnetic potential

Flux density

Magnetic field intensity

Relative permeability

Correct! Wrong!

Temporary magnets are used in

loud-speakers

motors

generators

all of the above

Correct! Wrong!

Science Quiz 83

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