Physics
Identify the correct advantages of dry cells:
- Dry cells are light in weight and small in size.
- There is no fear of leakage in dry cells.
- Dry cells can be easily carried from one place to another.
- All of the above
Answer
All of the above
Reason — Advantages of dry cells :
- Dry cells are light in weight and small in size.
- Dry cells can be easily carried from one place to another.
- There is no fear of leakage in the dry cells.
- They can easily be used to run simple electrical devices.
Hence, all the statements are correct.
Related Questions
We should not touch the switch with wet hands, otherwise:
- electricity may pass through our body
- electricity may not pass through the appliance
- circuit may break
- the switch may get off
The strength of an electromagnet can be increased:
- by increasing the number of turns in the coil.
- by decreasing the number of turns in the coil.
- by inserting a soft iron core in the coil.
- both increasing the number of turns in the coil and inserting a soft iron core.
Assertion (A): A freely suspended magnet rests in north-east direction.
Reason (R): Earth has its own magnetic field and the suspended magnet aligns with it.
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Reason (R): These tiny particles are electrons that drift from the negative terminal of the cell towards the positive terminal outside the cell.
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