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प्रश्न
Explain, why the potential difference across the terminals of a cell is more when the cell is not in use than it is when the cell is being used.
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उत्तर
The reason is that when the cell is being used, there is a drop in potential across the internal resistance of the cell.
संबंधित प्रश्न
Which of the two is connected in series : ammeter or voltmeter?
Which instrument is used to measure electric current? How should it be connected in a circuit?
What would be the danger involved in replacing a blown fuse with the one which would carry a large current?
An electric bulb is rated at 220 V, 100 W.
- What is its resistance?
- What safe current can be passed through it?
An electrical gadget can give an electric shock to its user under certain circumstances. Mention any two of these circumstances.
Problems for practice:
If 3A current flows through a circuit, then convert the current in terms of a milliampere.
A current of 2A passing through the conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is ______.
Electric current passes through a metallic conductor due to the movement of ______.
