Quiz 1
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Question 1 of 10
1. Question
1 pointsThe resistance of a wire is R ohms. It is stretched
to double its length. The new resistance of the
wire in ohms is -
Question 2 of 10
2. Question
1 pointsIn which of the following substances, the resistance
decreases with the increase of temperature -
Question 3 of 10
3. Question
1 pointsThe resistance of a wire of uniform diameter d
and length l is R. The resistance of another wire
of the same material but diameter 2d and length
4l will be -
Question 4 of 10
4. Question
1 pointsThe drift velocity of electrons is of the order of
-
Question 5 of 10
5. Question
1 pointsInsulators have …………….. temperature co-efficient
of resistance -
Question 6 of 10
6. Question
1 pointsThe diameter of an atom is about
-
Question 7 of 10
7. Question
1 pointsThe fuse wire is made of
-
Question 8 of 10
8. Question
1 pointsA constant voltage is applied between the
ends of a uniform metallic wire. Some heat is
developed in it. If both length and radius of the
wire are halved, the heat developed during the
same duration will become -
Question 9 of 10
9. Question
1 pointsWhich of the following is more suitable for the
core of an electromagnet ? -
Question 10 of 10
10. Question
1 pointsA magnetic needle is kept in a non-uniform
magnetic field. It experiences
