Which one is the best material for making connecting wires ?

Related Mcqs:

1. Two parallel wires carrying currents in the opposite directions____________________?

   A. repel each other
   B. attract each other
   C. have no effect upon each other
   D. they cancel out their individual magnetic fields

2. Which one of the following material is most suitable for making core of an electromagnet ?

   A. air
   B. steel
   C. Cu-Ni alloy
   D. soft iron

3. A certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by_________________?

   A. Stress/strain
   B. (stress/strain)
   C. Stress x strain
   D. (Stress / strain)

4. Which one of the following materials is useful for making bulb filaments ?

   A. constantan
   B. nichrome
   C. copper
   D. tungsten

5. Two vectors A and B are making angle θ with each other. The scalar projection of vector B on vector A is written as____________?

   A. A.B/A
   B. A.B/B
   C. A.cosθ
   D. Both a and b are correct

6. If a vector Ā is making an angle “∅” with positive y-axis then which of the following is correct.?

   A. Ax= ACos∅
   B. Ay= ASin∅
   C. Ay= ACos∅
   D. None

   Submitted by: Zahid Jagirani

7. The waves that require a material medium for their propagation are called__________________?

   A. matter waves
   B. electromagnetic waves
   C. carrier waves
   D. mechanical waves

8. Crystals of a material can behave as_________________?

   A. Convex lens
   B. Interferometer
   C. Diffraction grating
   D. Concave

9. When a force is applied at one end of an elastic wire it produces at strain ∝ in the wire. If y is the youngs modulus of the material of the wire the amount of energy stored per unit volume of the wire is given by_________________?

   A. Y∝
   B. 2Y∝
   C. Y∝/2
   D. Y∝2

10. The net charge on n-type material is____________________?

    A. Positive
    B. Negative
    C. Both positive and negative
    D. Neutral