In the diagram above, three identical lamps each of 100 W are connected in parallel across a potential difference of 250 V. Calculate the reading of the amm...

In the diagram above, three identical lamps each of 100 W are connected in parallel across a potential difference of 250 V. Calculate the reading of the ammeter.

Answer Details

In a parallel circuit, the potential difference across each component is the same. Therefore, each of the three lamps has a potential difference of 250 V across it. Each lamp has a power of 100 W, so the current passing through it is: I = P / V = 100 / 250 = 0.4 A Since the three lamps are in parallel, the total current drawn from the supply is the sum of the current through each lamp: I_total = 0.4 + 0.4 + 0.4 = 1.2 A Therefore, the reading of the ammeter would be 1.2A. Answer: 1.2A