Определите время и залог сказуемого и переведите следующие предложения на русский язык:

Lyubov в категроии Английский язык, вопрос открыт 12.05.2018 в 20:13

1. The first electric lamp was invented in 1873 by A. N. Lodygin and the first arc lamp by P. N. Yablochkov in 1876.
2. The current in a conductor is determined by two things, the voltage across the conductor and the resistance of the conductor.
3. A voltmeter measures the voltage and the potential difference in volts.
4. Mass is measured in grams or kilograms.