Question

which has high resistance - a 50W bulb or a 2.5W bulb and how many times

Answer 1

''  ⇒  A less power has always the higher resistance ''

   ⇒ 2. 5 watts has more resistance than 50 watts 

And also we know that -'' Power is inversely proportional to the resistance''
 ⇒ Power = voltage × voltage / resistance 
 ⇒ Rα1/p

Let us take  50 watt as R -1 and resistor - 2 as 2. 5 watt bulbNow let us find how many times it has more resistance 
R - 1/ r - 2  ⇒ 50 / 2.5 ⇒20 times.
So 2.5 watts is 20 times more than 50 watts of bulb.

Hope it helps u.

Answer 2

Explanation:

R1 /r2 =50/2.5 => 20 times.

so, 2.5 watts is 20 times more than 50 watts of bulb