Short Quiz

Question 1 of 5

Assertion (A): Safety fuses are made up of materials having a low melting point.
Reason (R): Safety fuses should be resistant to electric current.

A Both A and R are true, and R is the correct explanation of A. B Both A and R are true, but R is not the correct explanation of A. C A is true, but R is false. D A is false, but R is true.

Select one option. Answers are shown after the test.

Question 2 of 5

NCERT Exemplar

A constant current flowing in a horizontal wire in the plane of the paper from East to West is shown in Figure. The direction of magnetic field at a point will be from North to South: WENSWE

A directly above the wire. B directly below the wire. C at a point located in the plane of the paper, on the north side of the wire. D at a point located in the plane of the paper, on the south side of the wire.

Select one option. Answers are shown after the test.

Question 3 of 5

NCERT Exemplar

The device used for producing electric current is called a:

A generator B galvanometer C ammeter D motor

Select one option. Answers are shown after the test.

Question 4 of 5

NCERT Exemplar

The essential difference between an AC generator and a DC generator is that:

A AC generator has an electro-magnet while a DC generator has permanent magnet. B DC generator will generate a higher voltage. C AC generator will generate a higher voltage. D AC generator has slip rings while the DC generator has a commutator.

Select one option. Answers are shown after the test.

Question 5 of 5

Assertion (A): Magnetic field lines never intersect.
Reason (R): At a particular point magnetic field has only one direction.

A Both A and R are true, and R is the correct explanation of A. B Both A and R are true, but R is not the correct explanation of A. C A is true, but R is false. D A is false, but R is true.

Select one option. Answers are shown after the test.

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