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Activity to explain about the factors on which the resistance of a conductor depends |
| Answer» Resistance of a conductor directly depends upon Length of the wire LInversely depends upon Area of Cross section of the conductor 1/ANature of material used.Therefore, R = ρ L/ALength of the conductor is double, means you are stretching that given length to double it. As a result, the wire becomes thin due to stretching. So its area of cross section will be halved(Since the volume remains constant). So new resistance RN = ρ 2L/A/2 = 4. ρ.L/A =4RHence the new resistance will become 4 times. | |