science

Question 1

Device consisting of an iron or a steel core

Answer 1

Electromagnet

Question 2

How a magnetic field will interact with an electric circuit to producr an electromotive force

Answer 2

Electromagnetic Induction

Question 3

Device that converts mechanical energy obtained from external source into electrical power

Answer 3

Electric generator

Question 4

What is the left hand rule also called as? (flemings)

Answer 4

Motor Rule

Question 5

Device that turns electrical energy into motion

Answer 5

Electric motor

Question 6

Electric motor used a conventional flow

Answer 6

DC

Question 7

Force is the same direction while motor always spins either clockwise or counterclockwise

Answer 7

AC

Question 8

When a current carrying conductor within a magnetic field moves in the direction of the force

Answer 8

Motor effect

Question 9

Type of magnet in which the magnetic field is produced by an electric current

Answer 9

electromagnet

Question 10

EMF is also known as?

Answer 10

voltage

Question 11

Number of magnetic field lines passing thru a unit area

Answer 11

Magnetic Flux

Question 12

Process in which electric current is generated in a conductor by a moving or changing magnetic field

Answer 12

electromagnetic induction

Question 13

Region of space around a magnet

Answer 13

Magnetic field

Question 14

helps in onserving direction of the circular loopd around a magnet

Answer 14

conpass

Question 15

commonly attributed tonferromagnetism and electromagnetism

Answer 15

magnetism

Question 16

Unit used to meadure refractive power of a lens

Answer 16

Diopter