Question

Two electric bulbs A and B are marked 60W 220 V and 40 W 220 V respectively 1) Which one out of the two has greater
resistance?

Answer 1

hey mate!

here is your answer:

power=v^2/R

power=220/R

i.e 60=220^2/R1

and 40=220^2/R2

R1=220×220/60=806.666

R2=220×220/40=1210

R2>R1.

You can also directly write that power is indirectly proportional to resistance so, the pne which has more power will have less resistance and vice versa.

So, bulb with power 40 has high resistance.

hope it helped ^_^

Answer 2

Answer:

Explanation:

Ans - 220v,40w