Two wires A and B of length 30 cm and 10 cm resl. Compare the resistance of the two wires which will have less resistance.

# Answer

The resistance is directly proportional to the length of the wire. This means that if the length increased so does the resistance. They are linked by the equation R is directly proportional to length over area R=l/a. so this means that the 30cm wire will have thrice the resistance of the 10cm wire if the area of cross-section of both thee wires is the same.

#### Factors affecting resistance

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