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For a fixed supply voltage, the current flowing through a conductor will increase when its
  • a)
    area of cross-section is reduced
  • b)
    length is reduced
  • c)
    length is increased
  • d)
    length is increased and area of cross-section is reduced
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
For a fixed supply voltage, the current flowing through a conductor wi...

When l is reduced. I will be increased and vice-versa.
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For a fixed supply voltage, the current flowing through a conductor wi...
Explanation:
When a fixed voltage is applied across a conductor, the current flowing through it depends on the resistance of the conductor, which in turn depends on its length and cross-sectional area.

- Length: The longer the conductor, the greater is its resistance. Therefore, if the length of the conductor is increased, the current flowing through it will decrease. Conversely, if the length of the conductor is reduced, the current will increase.
- Cross-sectional area: The larger the cross-sectional area of the conductor, the lower is its resistance. Therefore, if the area of cross-section of the conductor is increased, the current flowing through it will increase. Conversely, if the area of cross-section is reduced, the current will decrease.

Therefore, the correct option is B, i.e., the current flowing through a conductor will increase when its length is reduced.
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Community Answer
For a fixed supply voltage, the current flowing through a conductor wi...
B
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For a fixed supply voltage, the current flowing through a conductor will increase when itsa)area of cross-section is reducedb)length is reducedc)length is increasedd)length is increased and area of cross-section is reducedCorrect answer is option 'B'. Can you explain this answer?
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