What happens to the resistance of a conductor if the area of cross-section is doubled without changing the length?

Thus, the above equation shows that the length of the conductor and the cross-section of the conductor are doubled, then the resistance of the conductor will remain the same, there is no change in the resistance of the conductor.

What happens to the resistance of a wire when its length and cross sectional area change?

The relationship between resistance and wire length is proportional . The relationship between resistance and the area of the cross section of a wire is inversely proportional .

How is the resistance of a conductor affected if the length and cross sectional area are both doubled?

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

What happens to the resistivity of a conductor if its length is doubled?

If the wire is stretched to double its length then it’s resistivity increases. As given by the relation. Resistivity is directly proportional to length of wire. So if length of wire increases its resistivity also increases.

What happens to resistance of a conductor when area of cross-section of the wire is halved?

The resistance of a conductor is inversely proportional to its area of cross section. i.e., Resistance will be reduced to half.

How does the length of a conductor affect its resistance?

First, the total length of the wires will affect the amount of resistance. The longer the wire, the more resistance that there will be. In the same manner, the wider the wire, the less resistance that there will be to the flow of electric charge.

What factors affect the resistance of a conductor?

There are several factors that affect the resistance of a conductor;

• material, eg copper, has lower resistance than steel.
• length – longer wires have greater resistance.
• thickness – smaller diameter wires have greater resistance.
• temperature – heating a wire increases its resistance.

What will be effect on the resistivity of a conductor if the length of the conductor is made four times?

Explanation: If length is 4 times then respectively Resistance will also increase by 4 times.

What will happen to the resistivity of the conductors if the length and area of the conductor is altered?

Answer: the resistance of a conductor is directly proportional to its length. so if length is increased then resistivity increases ande vice versa.

What happens to resistance of a conductor when its area?

On increasing the area of cross-section, resistance decreases. This is because resistance is inversely proportional to area.

What is the relationship between electrical resistance and conductivity?

Resistivity and Conductivity The electrical resistanceof a wire would be expected to be greater for a longer wire, less for a wire of larger cross sectional area, and would be expected to depend upon the material out of which the wire is made.

What are the dimensions of a rectangular conductor with rectangular cross section?

Resistance across AB is x, across CD is y and across EF is z. Then : A conductor with rectangular cross section has dimensions (4a×2a×a) as shown in figure. Resistance across AB is x, across CD is y and across EF is z.

What is the formula for the resistance of a wire?

For a wire of length L= m = ft and area A= cm2 corresponding to radius r= cm and diameter inches for common wire gaugecomparison with resistivity = ρ = x 10^ohm meters will have resistance R=ohms.

What is the electrical resistance of a circuit?

The electrical resistance of a circuit component or device is defined as the ratio of the voltage applied to the electric current which flows through it: Whether or not a material obeys Ohm’s law, its resistance can be described in terms of its bulk resistivity. The resistivity, and thus the resistance, is temperature dependent.