Advertisements
Advertisements
Question
Why are compact fluorescent lamps (CFLs) preferred over electric bulbs?
Advertisements
Solution
CFLs do not waste electricity as heat, unlike electric bulbs.
APPEARS IN
RELATED QUESTIONS
Three resistors of resistances R1 , R2 and R3 are connected (i) in series, and (ii) in parallel. Write expressions for the equivalent resistance of the combination in each case.
Two identical resistros of `12 Omega` each are connected to a battery of 3V . Calculate the ratio of the power consumed by the resulting combinations with minimum resistance and maximum resistance.
Explain the construction and working of an Telephone.
Electrical resistivity of a given metallic wire depends upon
Name the effect of current responsible for the glow of the bulb in an electric circuit.
Boojho made the circuit given in the figure and observed that the bulb did not glow. On Paheli’s suggestion he added one more cell in the circuit. The bulb now glows. Explain.
Which property of a conducting wire is utilised in making electric fuse?
Draw the symbols of the following circuit components.
Electric bulb
A tiny particle that rotates around the nucleus of an atom is ______.
Choose from the options a, b, c and d given in the following figure which shows the correct direction of current.
