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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
If the amount of electric charge passing through a conductor in 10 minutes is 300 C, the current flowing is:
(a) 30 A
(b) 0.3 A
(c) 0.5 A
(d) 5 A
The following table shows the current in Amperes and potential differences in Volts.
- Find the average resistance.
- What will be the nature of the graph between the current and potential difference? (Do not draw a graph.)
- Which law will the graph prove? Explain the law.
| V (volts) | I (amp) |
| 4 | 9 |
| 5 | 11.25 |
| 6 | 13.5 |
Tick(✓) the correct choice in the following:
A three pin plug is connected to the lead for a 1 kW electric iron to be
used on a 250 V supply. Which of the following statements is not correct?
Find the effective resistance in the following circuit diagrams (Fig.):
An electric bulb is rated 250 W, 230 V.
- the energy consumed in one hour, and
- the time in which the bulb will consume 1.0 kWh energy when connected to 230 V mains.
Three heaters each rated 250 W, 100 V are connected in parallel to a 100 V supply. The resistance of each heater
Fill in the blank :
1 mA = ............................. A.
Conventionally, the direction of the current is taken as:
Problems for practice:
If 3A current flows through a circuit, then convert the current in terms of a milliampere.
