Write in the form of a formula a relationship between resistance and resistivity of an ohmic conductor. A wire of length ‘l’ and resistance ‘R’ is stretched so that it’s length is doubled and area of cross section is halved. How will its
resistance change?

Write in the form of a formula a relationship between resistance and resistivity of an ohmic conductor. A wire of length ‘l’ and resistance ‘R’ is stretched so that it’s length is doubled and area of cross section is halved. How will its resistivity change . Justify your answer in each case.

A given wire having resistance R is stretched so as to reduce its diameter to half of its previous value. What will be its new resistance?

A wire of resistance 1 Omega is stretched to double its length. What is the new resistance?

A 8 ohm resistance wire is stretched to double its length. Calculate the new resistance of the wire.

A wire of resistances 1 Omega is streched to double its length. What is the new resiatnce?

A cylindrical conductor of length l and uniform are of cross section A has resistance R. Another conductor of length 2l and resistance R of the same material has area of cross section.

A cylindrical conductor of length l and uniform are of cross section A has resistance R. Another conductor of length 2l and resistance R of the same material has area of cross section.