What would be the effect on the resistance and resistivity of a metal wire by:
a) increasing the length
b) decreasing the area of cross-section
c) increasing the area of cross-section
d) increasing the temperature.
Class 10 Electricity chapter
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Answer:
The effect on the resistance of a metal wire of resistance through resistivity, R = ρl/A. Explanation: (a) From the above equation, it is clear that resistance is directly proportional to the length. So, if the length is increased the resistance of the metal wire will increase too.
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Answer:
option -a
Explanation:
The effect on the resistance of a metal wire of resistance through resistivity, R = ρl/A. Explanation: (a) From the above equation, it is clear that resistance is directly proportional to the length. So, if the length is increased the resistance of the metal wire will increase too.
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