What happens to the resistance when the length of the wire is halved?

The answer :If the length of the wire is halved, it’s resistance also gets halved. Reason: Resistance is directly proportional to length of the conductor . Hope it was helpful.

What happens to the resistance of a wire if it’s length is cut in half and its cross-sectional area is doubled?

Also the resistance of a conductor is inversely proportional to its cross-sectional area (A) as R ∝ 1/A. Thus doubling its cross-sectional area would halve its resistance, while halving its cross-sectional area would double its resistance.

When a wire of resistivity ρ is cut into two pieces the resistivity of the half piece is?

The resistivity of the two parts will be same. If we cut the wire into two equal parts then the length will be change of the wire but will not change the resistivity of the wire. Because resistivity depends upon the material of the wire. Hence, The resistivity of the two parts will be same.

What happens to the resistance and resistivity of A wire if the wire is cut into two equal halves?

The resistivity of the material will not change (remain the same) as it is independent of the length or cross-section of the wire. The resistance will change but resistivity will remain the same.

What is the equivalent resistance in the parallel combination?

The expression for the equivalent resistance in the parallel combination is as follows; Here, are the resistances. It is given in the problem that a wire whose resistance is 80 ohm is cut into three pieces of equal length. The value of each resistance is equal to .

What is the total resistance when a wire is cut in parallel?

When a wire of resistance R is cut in 3 pieces, each piece will have R/3 resistance. When we connect all those pieces in parallel, the total resistance will be R/9.

What is a wire of resistance ‘R’?

>> A wire of resistance ‘R’ is… A wire of resistance ‘R’ is cut into ‘n’ equal parts. These parts are then connected in parallel with each other. The equivalent resistance of the combination is?

How do you reduce the resistance of a wire to 1/3?

If you are saying one takes the 3 pieces of wire and now connect in parallel then the resulting resistance will be 1/9th the resistance of the original wire. First you reduced the length by 1/3 so just this one wire is 1/3rd the original. The you connected the 3 wires in parallel that resulted in 1/3rd the 1/3rd resistance of the original wire.