Question

An electric bulb is rated at 220 v and 100 w.
what is 'w' here reffered to?​

Answer 1

Answer:

w=power of the current

Step-by-step explanation:

p=v2/R

P= 100w

V=220w

R=v2/p

R=220×220/100

$= 484ohm \\ the \: current \: flows \: in \: the \: circuit \\ i = v \div r \\ i = 110 \div 484 \\ = 0.2272 \\ pb = v { }^{2} \div r \\ = 110 \times 110 \div 484 \\ pb = 25w$