Traditional Culture Encyclopedia - Traditional customs - How many 40W fluorescent lamps can an ordinary 5A button switch control at most (the control line diameter is 2.5mm)?
How many 40W fluorescent lamps can an ordinary 5A button switch control at most (the control line diameter is 2.5mm)?
Electric lamp belongs to electrical equipment with calorific value. If the efficiency is "1", the maximum power can be calculated according to the formula p = u * i: p = 220v * 5v =1100w.
The current I= power P/ voltage U=40/220=0.26A (approximate value) of each lamp is based on the rated switching current 5A, and the number of lamps that can be controlled by a 40W lamp is 5/0.26= 19 (approximate value), so a 40W bulb can be controlled by 19.
- Related articles
- How is the development of traditional culture in China?
- What are the indicated discoloration ranges of methyl red and methyl orange respectively?
- Lin's architectural achievements
- How to enhance the competitiveness of enterprises through brand marketing?
- The Meaning of "Talented in Two Rooms
- Why do walnuts turn red? Give me a scientific explanation.
- Is mung bean cake more or less calorie than mung bean cake?
- Product operation in the end to do what?
- What is the significance of the official launch of the first domestic aircraft carrier for the development of Chinese aircraft carriers?
- What are the six greatest folk tales in mainland China?