The OP should get used to write with capitals and spaces where they belong. Reading his texts is a royal pain.

Units demand certain coherence. When a text is a mess and hard to follow you loose interest in replying.

Or your overloaded on input. I find it more liberating to read less and actually read it. Stopping to smell the flowers if you will but to each there own.

 

Turns out that your 5 MW power plant generates -5 MW of electricity.

Yeah, just like the gas pump produces -15 gal of gas when I fill up, so, at $3 a gallon, they pay me $45.

Bob

 

Hello,

You can use Ohms wheel for all calculations:

View attachment 215615

Bertus

As a noob who is just learning this was amazingly helpful.

 

You can combine resistors in series or parallel to distribute the power over more parts. I'm curious about why you think this is a problem. If you need it then it doesn't matter how much it costs. If the solution costs too much, then you didn't really need it.

In my country 100w resistor is rare...ok thanks I get it.

 

The OP should get used to writing with capitals and spaces where they belong. Reading his texts is a royal pain.

Units demand certain coherence. When a text is a mess and hard to follow you loose interest in replying.

I'm so sorry about that, actually, my English is weak and I recently learned a little of this language...next time I will try better than this

 

Why are you loading a 24V power supply with an 8 ohm resistor to produce 24V/8= 3A of current and 24V x 3A= 72W of heat??
Oh, you are making a heater.
Some old fashioned incandescent light bulbs are 24V and use 3A to produce lots of heat and some light.

 

In my country 100w resistor is rare...ok thanks I get it.

What country is it then ?

 

Hello,

Looking at the IP, you could be in the Netherlands.
You could order high power resistors from conrad.
They have resistors upto 2000 Watts:



Bertus

 

from V=IR and P=VI; you can derive all of the relationships. You have P, V, I and V. Pick two quantities you have and the one you want to solve. Substitute if necessary and solve.

 

Why are you loading a 24V power supply with an 8-ohm resistor to produce 24V/8= 3A of current and 24V x 3A= 72W of heat??
Oh, you are making a heater.
Some old fashioned incandescent light bulbs are 24V and use 3A to produce lots of heat and some light.

then I can Division power with parallel resistors...there is any other solution?

 

What country is it then?

I'm from Iran.

 

Hello,

Looking at the IP, you could be in the Netherlands.
You could order high power resistors from Conrad.
They have resistors up to 2000 Watts:
Bertus

hi there...thanks so much for your attention...actually I am from Iran..your sign is so Wisely.