Advertisements
Advertisements
प्रश्न
State the condition when it is advantageous to connect cells in series.
Advertisements
उत्तर
It is advantageous to connect cells in series if the external resistance is large enough compared to the total internal resistance of cells.
संबंधित प्रश्न
Draw the electrical symbols of the following components and state its use:
Ammeter.
Which is the better way to connect lights and other electrical appliances in domestic wiring: series circuits or parallel circuits? why?
If the current passing through a conductor is doubled, what will be the change in heat produced
Match the pairs.
| ‘A’ Group | ‘B’ Group |
| 1. Free electrons | a. V/R |
| 2. Current | b. Increases the resistance in the circuit |
| 3. Resistivity | c. Weakly attached |
| 4. Resistances in series | d. VA/LI |
Define the following:
Semiconductors
Calculate the current through a 60 W lamp rated 250 V. If the line voltage falls to 200 V, how is power consumed by the bulb affected?
An electrical gadget can give an electric shock to its user under certain circumstances. Mention any two of these circumstances.
Small amounts of electrical current are measured in milliampere (mA). How many milliampere are there in 0.25 A ?
One unit of electrical energy consumed is equal to 1000 kilowatt-hour.
A current of 2A passing through the conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is ______.
