Which method can be used for absolute measurement of resistances _______________?

Related Mcqs:

1. A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is_____________?

   A. 6.4 A, 6.9 A
   B. 6.4 A, 9.6 A
   C. 4.6 A, 6.9 A
   D. 4.6 A, 9.6 A

2. Two resistances Rl and Ri are connected in series across the voltage source where Rl>Ri. The largest drop will be across______________?

   A. Rl
   B. Ri
   C. either Rl or Ri
   D. none of them

3. With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals_____________?

   A. 10 W
   B. 20 W
   C. 40 W
   D. 60 W

4. Which is the best conductor of electricity _______________?

   A. Iron
   B. Silver
   C. Copper
   D. Carbon

5. Power dissipation in ideal inductor is

   A. Maximum
   B. Minimum
   C. Zero
   D. A finite value

6. The resistance of a copper wire 200 m long is 21 Q. If its thickness (diameter) is 0.44 mm, its specific resistance is around_______________?

   A. 1.2 x 10~8 Q-m
   B. 1.4 x 10~8 Q-m
   C. 1.6 x 10″”8 Q-m
   D. 1.8 x 10″8 Q-m

7. Varistors are______________?

   A. insulators
   B. non-linear resistors
   C. carbon resistors
   D. resistors with zero temperature coefficient

8. The insulation on a current carrying conductor is provided__________?

   A. to prevent leakage of current
   B. to prevent shock
   C. both of above factors
   D. none of above factors

9. It becomes more difficult to remove_________________?

   A. any electron from the orbit
   B. first electron from the orbit
   C. second electron from the orbit
   D. third electron from the orbit

10. If/, R and t are the current, resistance and time respectively, then according to Joule’s law heat produced will be proportional to_______________?

    A. I2Rt
    B. I2Rf
    C. I2R2t
    D. I2R2t*