Question

If power is 100watt and voltage is 220V. Find resistance
a)2.5
b)3.5
c)4.5
d)5.5

Please solve this

Answer 1

Answer:

Explanation:

(a): 25w

Solution : R=V2/P

= (220)2/100

= 484 ?

The resistance of the bulb remains constant

if the supply voltage is reduced to 110 V then V?=110 V

the power consumed by it is given by the expression = V?2/R

= (110)2/484 = 25w

Answer 2

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↪ actually welcome to the concept of Physics

↪ use general formula to find resistance as you know

P = V²/R

R = V²/P = (220)²/100 = 22 × 22 = 484 ohm

I think you given wrong of options

☺☺☺Special Tnxx for Brainlist and following me ..

☺☺☺Special Tnxx for Brainlist and following me ..(=_=)