which is having more resistance a 220 volt 100 watt bulb or a 220 volt 60 watt bulb and give reason.
Answers
Answered by
6
Power = V² ÷ R
R = V² ÷ P
(A) Condition
V = 220V , P = 100W
R = 220 × 220 ÷ 100
R = 484 Ω
(B) Second Condition
V = 220V , P = 60W
R= 220 × 220 ÷ 60
R = 807 ohm ... approx
Bulb (b ) has higher resistance
Answered by
1
Both bulb are designed to operate same voltage (220v) . we know that higher bulb rating power lower it's resistance thus 100w bulb has lower resistance than 60w bulb.
Similar questions