Two solenoids

Electricity and Magnetism Level 2

There are two solenoids X and Y with lengths \(20\text{ cm}\) and \(40\text{ cm},\) respectively. If the current intensities flowing in X and Y are \(1\text{ A}\) and \(2\text{ A},\) respectively, what is the ratio of the intensities of the magnetic fields induced inside X and Y?

The number of turns of the two solenoids are the same.

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