1. The ratio of the resistance of a 100 W, 220 V lamp to that of a 100 W, 110 V lamp will be nearly
2. The resistance of a 100 W, 200 V lamp is
3. The element of electric heater is made of
4. Three equal resistors connected in series across a source of emf together dissipate 10 watts of power. What would be the power dissipated in the same resistors when they are connected in parallel across the same source of emf?
5. The element of electric heater is made of
6. Which of the following has negative temperature coefficient ?
7. Specific resistance of a substance is measured in
8. Which of the following bulbs will have the least resistance ?
9. Four identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be
10. A resistance of 5 ohms is further drawn so that its length becomes double. Its resistance will now be
Question 1 of 10
