Advertisements
Advertisements
प्रश्न
An Electric bulb is marked 100 W, 230 V. What how long would this lamp take to consume one unit of electricity?
Advertisements
उत्तर
Energy consumed in kWh = `("W" xx "Time in hour")/1000`
`= (100 xx "t"("in hr"))/1000`
If energy consumed in 1 kWh, then 1 = `(100 xx "t")/1000`
time required for consuming 1 kWh, t = 10 hour.
संबंधित प्रश्न
An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be ______.
An electric bulb is rated 250 W, 230 V. Calculate:
- the energy consumed in one hour
- the time in which the bulb will consume 1.0 kWh energy when connected to 230 V mains.
Express watt hour and kilowatt hour in joule.
Name two common material used for heating elements.
With reference to the diagram shown below calculate:
(i) The equivalent resistance between P and Q.
(ii) The reading of ammeter.
(iii) The electrical power between P and Q.
A bulb is connected to a battery of e.m.f. 6V and internal resistance 2Ω A steady current of 0.5A flows through the bulb. Calculate the resistance of the bulb.
A battery of e.m.f. 12V and internal resistance 1.6 Ω is connected to two resistors of 4Ω and 6Ω connected in parallel. Calculate:
(i) the current drawn from the battery,
(ii) the power dissipated in each resistor,
(ii)the total power supplied by the battery.
Electric power is inversely proportional to ____________.
What is the commercial unit of electrical energy?
Using a long extension cord in which each conductor has a resistance of 8Ω, a bulb marked as '100 W, 200 V' is connected to a 220 V dc supply of negligible internal resistance as shown in the figure. The power delivered to the bulb is ______ W.
