One electric lamp is connected to a network with a voltage of 127 V, and the other is connected

univerkov | August 2, 2021 | education

One electric lamp is connected to a network with a voltage of 127 V, and the other is connected to a network with a voltage of 220 V. In which lamp, when passing 1 Kl, a lot of work is done?

Data: U1 (mains voltage on the first lamp) = 127 V; U2 (mains voltage on the second lamp) = 220 V; q (charge passed through the lamps) = 1 Cl.

1.1. The work of the current in the first lamp: A1 = U1 * q = 127 * 1 = 127 J.

1.2. The work of the current in the second lamp: A2 = U2 * q = 220 * 1 = 220 J.

1.3. Comparison of works: A1 (127 J) <A2 (220 J).

Answer: The current has done a great job in the second lamp.

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