Electric Bulb
Trending Questions
Q. A cylindrical wire is compressing length by 10%.The percentage decrease in the resistance will be a) 16% b) 19% c) 20% d) 25%
Q. ____ is a device which converts electrical energy into heat energy and light energy.
- Bulb
- Motor
- Battery
- Transformer
Q. In a series combination of resistors, the effective resistance is lesser than any of the individual resistances.
- False
- True
Q.
When a bulb lights upon passing current the change of energy is:
From electrical energy to heat energy
From electrical energy to light energy.
From electrical energy to heat and light energy.
From electrical energy to mechanical energy
Q. In a series combination of resistors, the effective resistance is lesser than any of the individual resistances.
- False
- True
Q.
In a bulb, electrical energy is converted into:
heat energy only
mechanical energy
light energy only
both heat and light energy
Q. Why is there a uniform flow of current in a series connection of resistors? The resistors should block the same flow of current to the next resistors?
Q.
You have three resistors of values 2Ω, 3Ω and 5Ω How will you join them so that the total resistance is less than 1Ω draw diagram and find the total resistance.