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प्रश्न
Name the principle on which a transformer works.
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उत्तर
A transformer works on the principle of electromagnetic induction.
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संबंधित प्रश्न
Fill in the blank:
To increase the effective resistance in a circuit the resistors are connected in _____________.
Choose the correct alternative and rewrite the following sentence.
When the resistance of a conductor increases, the current will ________ increase.
How many milliamperes as there in 1 ampere?
In the network shown in the following adjacent Figure, calculate the equivalent resistance between the points.
- A and B
- A and C
The following table shows the current in Amperes and potential differences in Volts.
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- 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 |
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Fill in the blank :
1 mA = ............................. A.
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______ is used to measure the electric current.
