Question

which has higher resistance -
a 50w balb or a 2.5wbelb and how many times.​

Answer 1

hey Mae here is ur ans

since we know that

P= VI

P= (IR)I

P = I²R

P is directly proportinal to R

so that why 50w bulb has more resistance than 2.5w bulb

hope it help u

Answer 2

GIVEN ;-

⇒ A 50  watts bulb

⇒ A 2 .5 watts bulb

TO FIND ;-

⇒ Which has higher resistance and by how much ?

SOL ;-

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

                  ⇒ 2. 5 watts has more resistance than 50 watts 

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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 bulb

Now 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.