If you have a resistor, say 10 Ohms, and you apply a voltage across it, say 10V

the resistor will dissipate V*R=10W. So you would need a 10W resistor for the job.

But what about if you draw current for a short period of time, say 0.1 sec?

Could you then use a lower rating resistor?

Is there any way that you can calculate, and make a chart, the time-on vs power dissipation?

Regards

Francesco C