Hi guys!
I have a transformer rated 230V to 12-0-12V, 500mA.
i wanted to know what this means and what happens when i put a small load?
ex- If i add a load of 10 ohms what happens?

 

It means the maximum RMS output current rating of the transformer is 500mA.
You should never add a load that draws more than that amount of current.

If you add a 10Ω load between one output and the center-tap then the current through the load will be 12v/10Ω = 1.2Arms, which is over double the transformer rated current, and will rapidly cause it to overheat and burn out.

You need to study Ohm's law.

 

Who

It means the maximum RMS output current rating of the transformer is 500mA.
You should never add a load that draws more than that amount of current.

If you add a 10Ω load between one output and the center-tap then the current through the load will be 12v/10Ω = 1.2Arms, which is over double the transformer rated current, and will rapidly cause it to overheat and burn out.

You need to study Ohm's law.

You think i dont know ohm's law??....i was wondering if coil will burn or mcb will trip.
And for the record....answer kindly next time.

 

CC is correct. Voltage over resistance equals current. And with a transformer that has a center tapped secondary, as indicated by the 12-0-12, a ten ohm resistor across the winding would actually draw 2.4 amps, and the transformer would be way overloaded. So a study of fundamental circuit theory is also in order.