What is the kilowatt hour unit?
(A) charge power
(B) Energy
(C) Potential power
(D) power
What is the unit of magnetic field?
(A) Newton
(B) Tesla
(C) Ampere
(D) meter
What is the color that is used in danger signals?
(A) Yellow color
(B) Purple color
(C) Blue color
(D) Red color
What type of current is obtained from dynamo?
(A) Direct Section
(B) alternating current
(C) both streams
(D) None of these
What type of reflection is made on the cinema screen?
(A) virtual image
(B) real reflection
(C) both
(D) All the statements are true
What type of magnet is used in commercial motors?
(A) Permanent magnet
(B) umbilical magnet
(C) electromagnet
(D) Common rod magnet
What is the farthest point of the normal human eye?
(A) is at 25 cm
(B) is at infinity
(C) is at 25 mm
(D) is at 25 m
Which are the two important parts of human beings in which magnetic field must be generated?
(A) arms and legs
(B) muscles and heart
(C) Heart and brain
(D) Eye and visual nerve
Two main organs in the human body where the magnetic field produced is significant, are the heart and the brain. The magnetic field inside the body forms the basis of obtaining the images of different body parts.
Who discovered electromagnetic induction?
(A) Maxwell
(B) Fleming
(C) Faraday
(D) Ampere
Which material rod is often used to make electromagnets?
(A) Steel
(B) malleable iron
(C) Brass
(D) None of these
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