Question

Телевизор с электронно-лучевой трубкой имеет мощность 50 Вт. Какую энергию потребляет жидкокристаллический телевизор, работающий в течение часа? Ответ в кДж!

Answer 1

E=P*t=50*3600=180000 Дж=180 кДж

Answer 2

Calculating Energy Consumption of a Liquid Crystal Display (LCD) TV

To calculate the energy consumption of a liquid crystal display (LCD) TV, we can use the formula:

Energy (in kilojoules) = Power (in watts) × Time (in hours)

Given that the power of the CRT TV is 50 watts and the time it operates is 1 hour, we can calculate the energy consumption of the LCD TV.

Using the formula: Energy = 50 watts × 1 hour = 50 watt-hours

To convert watt-hours to kilojoules, we can use the conversion factor: 1 watt-hour = 3.6 kilojoules

So, 50 watt-hours = 50 × 3.6 = 180 kilojoules

Therefore, the energy consumption of the LCD TV, operating for one hour, is 180 kilojoules.