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प्रश्न
Define the term resistance.
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उत्तर
Resistance is the obstacle that the wire presents to the current flow.
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संबंधित प्रश्न
How does the resistance of a wire depend on its length? Give a reason for your answer.
How are the home appliances connected in general, in series or parallel. Give reasons.
The effective resistance of three resistors connected in series is lesser than the lowest of the individual resistances.
An electric bulb is rated ‘240 V, 100 W’.
- What information can you get from the above statement?
- What will happen if this bulb is connected across 220 V?
- Calculate the resistance of the bulb.
- Also find the energy consumed by the bulb in 10 minutes.
The resistance of a straight conductor is independent of ______.
The resistance of a conductor is R. If Its length is doubled, then its new resistance will be ______.
Resistors are connected in series if the resistance of the electric circuit is to be ______.
If the area of cross-section of the conductor is doubled its resistance gets ______.
Define the following:
Fixed resistor
Two copper wires are of the same length, but one is thicker than the other. Which wire will have more specific resistance?
