When current is taken by the lamp marked 100w when it is connected to a 2200 main supply? What is the resistance of the lamp
Answers
Answered by
2
Answer:
Explanation:
Given : V=220 volts P=100 W
∴ Resistance of the filament R= Vsq/ R
⟹ R= 220sq/100 =484Ω
Answered by
0
Answer:
484 ohm
Explanation:
Given,
Power ( P ) = 100 W
Voltage ( V ) = 220 V
To find : Resistance ( R ) = ?
P = V^2 / R
R = 220^2 / 100
= ( 220 × 220 ) / 100
= ( 22 × 22 × 100 ) / 100
= 22 × 22
R = 484 ohm
Therefore, the resistance of the lamp is 484 ohm.
Similar questions