Question

An electric bulb is rated as 10 W, 220V. How many of these bulbs can be connected in parallel across the two wires of 220 V supply line if the maximum current which can be drawn in 5A ?

Answer 1

Answer:

110 bulbs

Explanation:

the resistance of a bulb is , R = V^2/P

R = 220×220/10 = 4840 ohm

now the resultant resistance R' = 220/5 = 44 ohm

if n number of bulbs connected is parallel then. R' = R/n

n = R/R' = 4840/44 = 110

n = 110

Answer 2

hey mate this is ur answer.....