Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
Initially, the bulb was not glowing because the voltage required to make the bulb glow was not sufficient. With the addition of another cell, the voltage increases, i.e. the current through the bulb increases more than a particular value and the bulb starts glowing because it gets sufficient energy to heat its filament.
APPEARS IN
संबंधित प्रश्न
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.
Water can conduct electricity.
Give a reason for the following.
One should not use an umbrella while crossing an open field during thunderstorm.
A cell, a resistor, a key and ammeter are arranged as shown in the circuit diagrams of Figure. The current recorded in the ammeter will be
 |
 |
 |
| (i) | (ii) | (iii) |
Electrical resistivity of a given metallic wire depends upon
Which of the following solutions will not make the bulb in figure?
Name the effect of current responsible for the glow of the bulb in an electric circuit.
Draw the symbols of the following circuit components.
Electric bulb
A tiny particle that rotates around the nucleus of an atom is ______.
In an electric bulb, light is produced due to the glowing of ______.
