A. practically zero
B. low
C. high
D. very high
Related Mcqs:
- The weight of an aluminum conductor as compared to a copper conductor of identical cross-section, for the same electrical resistance, is __________?
- If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes __________?
- Copper wire of certain length and resistance is drawn out to three times its length without change in volume, the new resistance of wire becomes __________?
- Two copper conductors have equal length. The cross-sectional area of one conductor is four times that of the other. If the conductor having smaller cross-sectional area has a resistance of 40 ohms the resistance of other conductor will be __________?
- The electrical resistance of a semi-conductor
- 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 __________?
- The temperature coefficient of resistance of a wire is 0.00125 per ?C. At 300 K its resistance is 1 ohm. The resistance of the wire will be 2 ohms at
- A nichrome wire used as a heater coil has the resistance of 2 £2/m. For a heater of 1 kW at 200 V, the length of wire required will be __________?
- A closed switch has a resistance of __________?
- If a closed circuit is made of two dissimilar metals, an electric current flows in the circuit whdn the two junctions are maintained at different temperatures. This phenomenon is known as
