Advertisements
Advertisements
प्रश्न
A student wants to use an electric heater, an electric bulb and an electric fan simultaneously.
How should these gadgets be connected with the mains? Justify your answer giving three reasons.
Advertisements
उत्तर
The devices need to be linked simultaneously. The current flows continuously through the whole electric circuit in a series circuit. Consequently, it is plainly impractical to link an electric heater and light in series since they require currents with quite different values to function. Second, another significant drawback of a series circuit is that when one component fails, the entire circuit is destroyed, A parallel circuit, on the other hand, splits the current among the electrical devices. Thirdly, a parallel circuit has less overall resistance. This is helpful particularly when each gadget has different resistance and requires different current to operate properly.
APPEARS IN
संबंधित प्रश्न
1Kwh =`( 1 "volt "xx 1 am pere xx.............)/1000`
Water in an electric kettle connected to a 220 V supply took 5 minutes to reach its boiling point. How long would it have taken if the supply voltage had fallen to 200 V?
What is the current I in the given circuit (Fig. )?

Two resistors A and B of 4 Ω and 6 Ω respectively are connected in parallel. The combination is connected across a 6 volt battery of negligible resistance. Calculate the power supplied by the battery.
In an electric radiator or room heater, state with reason, why the porcelain tube wound with a nichrome wire is placed between the pole and principal focus of the parabolic concave reflector.
If the rating of an electric bulb is 100W – 230V, Explain its meaning.
What would happen and why, to an electric bulb when it is connected across a supply of voltage (i) lower (ii) higher than its proper rating?
The unit of e.m.f. of a cell is ____________.
