Question

A resistor is rated 10 ohm, 0.25w, What is the maximum current the resistar can withstand? ​

Answer 1

Answer:-

• Resistance=R=10ohm
• Power=0.25w=P
• Current=I=?

We know that

$\boxed{\sf P=I^2R}$

$\\ \sf\longmapsto I^2=\dfrac{P}{R}$

$\\ \sf\longmapsto I^2=\dfrac{0.25}{10}$

$\\ \sf\longmapsto I^2=2.5$

$\\ \sf\longmapsto I=\sqrt{2.5}$

$\\ \sf\longmapsto I=1.5A$