In a circuit, three bulbs are connected in series and in another circuit, three bulbs are connected in parallel. The magnitude of the emf source for both circuits is the same. How can you explain the difference in brightness of bulbs in both circuits?
The brightness of a bulb is determined by the power it dissipates, which depends on the current passing through it and the voltage across it. Power P dissipated by a resistor (or bulb) is given by the formula: P=V2/R​ or alternatively, in terms of current I: P=I2R where: P is the power dissipated (which determines … Read more