A lead wire and an iron wire are connected in parallel. Their respective resistances are in the ratio 49:24. The former carries 80 per cent more current than the latter and the latter is 47 per cent longer than the former. Determine the ratio of their cross-sectional area. [2.5:1]

A lead wire and an iron wire are connected in parallel. Their respective resistances are in the ratio 49:24. The former carries 80 per cent more current than the latter and the latter is 47 per cent longer than the former. Determine the ratio of their cross-sectional area. [2.5:1]

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter7: Parallel Circuits

Section: Chapter Questions

Problem 3PP: Using the rules for parallel circuits and Ohmslaw, solve for the missing values....

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Current Division Method

The generalized current divider formula is given by the following relation below,

Question

A lead wire and an iron wire are connected in parallel. Their respective resistances are in the ratio
49:24. The former carries 80 per cent more current than the latter and the latter is 47 per cent
longer than the former. Determine the ratio of their cross-sectional area.
[2.5:1]

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