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प्रश्न
State the condition when it is advantageous to connect cells in parallel.
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उत्तर
It is advantageous to connect cells in parallel if the internal resistance of each cell is high enough compared to the external resistance.
संबंधित प्रश्न
Draw the electrical symbols of the following components and state its use:
Rheostat (variable resistance)
A bulb marked 12 V, 24 W operates on a 12 volt car battery for 20 minutes. Calculate:
(i) The current flowing through it, and
(ii) The energy liberated.
Electrical appliances have voltage and power ratings as listed below. Which
has the larger working resistance?
| Appliances | Voltage (V) | Power (W) |
| (a) Washing machine | 250 | 3000 |
| ( b) Television | 240 | 160 |
| (c)240 | 240 | 1500 |
| ( d) Hair curler | 250 | 20 |
| ( e) Car head lamp | 12 | 36 |
What is the function of a step-up transformer?
When an electric current is passed, electrons move from:
Problems for practice:
If 3A current flows through a circuit, then convert the current in terms of a milliampere.
