Question

how many 40 watt bulbs can be safely connected in a parallel circuit drawing a current 5 Ampere from a 220 Volt supply?​

Answer 1

$\huge{\underline{\tt{\red{Answer-}}}}$

27 bulbs

$\small{\underline{\tt{\blue{Solution-}}}}$

Given: V = 220 V,  I = 5 A and P = 40 W

P=VI

 = 220×5

No. of bulbs = 220×5/40

                    = 27.5

                    = 27 bulbs