EASY
9th Tamil Nadu Board
IMPORTANT
Earn 100

A device for producing electric current using electromagnetic induction is electric .

57.14% studentsanswered this correctly

Important Questions on Magnetism and Electromagnetism

EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 5 - Magnetism and Electromagnetism>textbook exercises>Q iv
State whether true or false. If false, correct the statement.
A generator converts mechanical energy into electrical energy.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 5 - Magnetism and Electromagnetism>textbook exercises>Q iv
State whether true or false. If false, correct the statement.
Magnetic field lines always repel each other and do not intersect.
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 5 - Magnetism and Electromagnetism>textbook exercises>Q iv
State whether true or false. If false, correct the statement.
Fleming’s left-hand rule is also known as Dynamo rule.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 5 - Magnetism and Electromagnetism>textbook exercises>Q iv
State whether true or false. If false, correct the statement.
The speed of rotation of an electric motor can be increased by decreasing the area of the coil.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 5 - Magnetism and Electromagnetism>textbook exercises>Q iv
State whether true or false. If false, correct the statement.
A transformer can step up direct current.
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 5 - Magnetism and Electromagnetism>textbook exercises>Q iv
State whether true or false. If false, correct the statement.
In a step down transformer the number of turns in primary coil is greater than that of the number of turns in the secondary coil.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 5 - Magnetism and Electromagnetism>textbook exercises>Q v
State Fleming’s Left-hand Rule.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 5 - Magnetism and Electromagnetism>textbook exercises>Q v
Define magnetic flux density.