A. 400 Q
B. 600 Q
C. 800 Q
D. 1000 Q
Related Mcqs:
- The hot resistance of the bulb’s filament is higher than its cold resistance because the temperature co-efficient of the filament is __________?
- A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will __________?
- 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 __________?
- If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes __________?
- The filament of an electric bulb is made of __________?
- An electric filament bulb can be worked from __________?
- Voltage dependent resistors are used __________?
- 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 __________?
- Voltage dependent resistors are usually made from __________?
- 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 __________?
