# Answer on Electric Circuits Question for manisha

Question #53458

how the formula of resistance changes in different conditions like:

1 when mass, resistance,density of material of which wire is made and resistivity of the wire is given and we have to find diameter and length of the wire.

2 when length, diameter and resistance of wire is given and we have to find resistivity of the material of wire.

3 when resistance of wire is given and length is increased to twice its original length.and we have to calculate new resistance.

4 when a wire is stretched to reduce its diameter to half its original value and we have to find new resistance of wire.

5 when resistance of wire is given and the wire is stretched so that its length become s 3 times. assuming that there is no change in density on stretching and we have to calculate the resistance of new wire.

PLEASE ALSO GIVE REASON THAT HOW FORMULA CHANGE.

1 when mass, resistance,density of material of which wire is made and resistivity of the wire is given and we have to find diameter and length of the wire.

2 when length, diameter and resistance of wire is given and we have to find resistivity of the material of wire.

3 when resistance of wire is given and length is increased to twice its original length.and we have to calculate new resistance.

4 when a wire is stretched to reduce its diameter to half its original value and we have to find new resistance of wire.

5 when resistance of wire is given and the wire is stretched so that its length become s 3 times. assuming that there is no change in density on stretching and we have to calculate the resistance of new wire.

PLEASE ALSO GIVE REASON THAT HOW FORMULA CHANGE.

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