An electric bulb is rated 220v-100w.the power consumed by it when operated on 110v will be
To calculate the power consumed by the electric bulb when operated on 110V, you can use the formula:
P = (V^2) / R
Where:
P is the power consumed (in watts)
V is the voltage (in volts)
R is the resistance (in ohms)
In this case, the voltage rating of the bulb is 220V, and the power rating is 100W. The resistance can be calculated using the formula:
R = (V^2) / P
Substituting the given values into the formula:
R = (220^2) / 100 = 484 ohms
Now, we can calculate the power consumed at 110V using the formula:
P = (V^2) / R
P = (110^2) / 484 = 25W
Therefore, the power consumed by the electric bulb when operated on 110V will be 25W.
To find the power consumed by the electric bulb when operated on 110V, you can use the formula:
Power consumed = (Voltage)^2 / (Resistance)
Since resistance is not given, we can assume it remains constant.
First, let's find the resistance of the bulb using the given information:
Resistance = (Voltage)^2 / Power
Resistance = (220V)^2 / 100W
Resistance = 48400V^2 / 100
Resistance = 484 ohms
Now, let's calculate the power consumed when the bulb is operated on 110V:
Power consumed = (Voltage)^2 / Resistance
Power consumed = (110V)^2 / 484 ohms
Power consumed = 12100V^2 / 484
Power consumed = 25W
Therefore, the power consumed by the electric bulb when operated on 110V is 25W.