Question

Q4.What is electrical resistivity? In a series electrical circuit comprising of a resistor having a

metallic wire, ammeter reads 5 A.The reading of the ammeter decreases to half when the

length of the wire is doubled.Why?​

Answer 1

Answer:

Hey I am not able to ask any question how is this happening?? I am asking question and its coming the question was deleted how is it happening?? can anyone please tell me??

Answer 2

Answer:

Here is your answer

Explanation:

Answer: The resistivity of a material is defined as the resistance of a conductor made of that material of unit length and unit cross-sectional area. R is doubled while V remains unchanged. Hence, current becomes half.

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