A. 80 m
B. 60 m
C. 40 m
D. 20 m
Related Mcqs:
- 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 __________?
- If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes __________?
- When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will __________?
- Nichrome wire is an alloy of __________?
- When current flows through heater coil it glows but supply wiring does not glow because __________?
- 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
- The resistance of a few meters of wire conductor in closed electrical circuit is __________?
- Four wires of same material, the same cross-sectional area and the same length when connected in parallel give a resistance of 0.25 Q. If the same four wires are connected in series the effective resistance will be __________?
- 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 __________?
