Question:medium
An electric tungsten bulb is connected into a home circuit. The home electric supply runs at 220 volt potential difference. When switched on, a current of 0.45 A flows through the bulb. What must be the power (wattage) of the bulb? If it is kept ‘on’ for 10 hours, how many units of electricity will be consumed?
An electric tungsten bulb is connected into a home circuit. The home electric supply runs at 220 volt potential difference. When switched on, a current of 0.45 A flows through the bulb. What must be the power (wattage) of the bulb? If it is kept ‘on’ for 10 hours, how many units of electricity will be consumed?
Show Hint
Remember: Power is calculated as P = V × I, and energy is E = P × t. 1 unit of electricity = 1 kWh.
Updated On: Mar 13, 2026
Show Solution
Solution and Explanation
Was this answer helpful?
0
Top Questions on Human Eye and The Colourful World
Draw a neat labelled diagram of electric motor and write its principle.
- Maharashtra Class X Board - 2026
- Science and Technology
- Human Eye and The Colourful World
- For normal human eye, the minimum distance of distinct vision is ..................
- Maharashtra Class X Board - 2026
- Science and Technology
- Human Eye and The Colourful World
- State the range of the power of accommodation of a normal human eye.
- CBSE Class X - 2026
- Science
- Human Eye and The Colourful World
- How does the change in curvature of the eye lens help us in the process of seeing the nearby objects clearly?
- CBSE Class X - 2026
- Science
- Human Eye and The Colourful World
- Want to practice more? Try solving extra ecology questions todayView All Questions