Question

15 хв заряд 300 кл 125 напруга 230 В R-?

Answer 1

Ответ:

690 Ом

Объяснение:

t=15 мин = 900 с

q=300 Кл  

U = 230В​

I=q/t

R=U/I = U / (q/t) = U*t / q = 230*900 / 300 = 690 Ом

Answer 2

It seems like your question is incomplete or has some missing information. From the context, it looks like you are providing information about a device or a system, but I'm not entirely sure what you're asking for.

Based on the information given:

• 15 хв (15 minutes) - This might refer to the charging time of the device.
• 300 кл (300 kΩ or 300 kiloohms) - This might represent the resistance of the device.
• 125 напруга (125 volts) - This could be the voltage rating of the device.
• 230 В (230 volts) - This might be the input voltage to the device.

However, there is one unknown value mentioned as "R-?" which is not clearly defined. If "R-?" is meant to represent the resistance of the device, then it is already given as 300 kiloohms (300 kΩ).

If you can provide more context or clarify your question, I'd be happy to help you further!