Bulb Power Calculation Using Voltage and Current
To find the power of the electric bulb, we use the fundamental relationship between electrical power, voltage, and current.
Electrical Power Formula
The formula relating power (\(P\)), voltage (\(V\)), and current (\(I\)) is:
\(P = V \times I\)
Step-by-Step Calculation
- Identify Given Values:
- Voltage (\(V\)) = 200 V
- Current (\(I\)) = 0.5 A
- Apply the Power Formula: Substitute the given values into the formula \(P = V \times I\).
\(P = 200 \text{ V} \times 0.5 \text{ A}\)
- Calculate the Result:
\(P = 100 \text{ W}\)
The power of the bulb is 100 Watts (W).
Therefore, the correct option is the one representing 100 W.
Similar Questions
- A bulb is connected across a battery of 10 V for 20 seconds. If a current of 2 A flows through it, calculate the heat energy generated by the bulb.
- An 8 Ω resistor generates 200 J of heat every second. What is the potential difference across the resistor?
- If Power = 100 watt and Resistance =4 ohms, then Current (I) =________?
- 450V bulb passes a current of 0.4A. Calculate the power in the lamp.
- When the potential difference across a resistive conductor of resistance R obeying ohm's law, is doubled, the rate of generation of heat will become
Important Questions from Power in Electric Circuits
Two electric bulbs marked 25 W - 220 V and 100 W - 220 V are connected in series with 440 V supply. Which of the bulb will fuse?
Two heaters are marked 200V,300W & 200V,600W. If the heaters are connected in series and the combination connected in series and the combination connected to a 200 V dc supply, then which option is true out of the following?
- Two electric bulbs are rated '$220$ V, $100$ W' and '$220$ V, $50$ W' respectively.
If these two bulbs are connected in series across a $220$ V supply, what will be the power consumed by the $100$ W bulb? - Three identical bulbs are connected in parallel to a battery of 6 V. If the current in the circuit is 0.6 A, the power dissipated by the battery is:
- A bulb is connected across a battery of 10 V for 20 seconds. If a current of 2 A flows through it, calculate the heat energy generated by the bulb.
