Two cylindrical resistors are made from copper. The first one is of length L and of radius r . The 2nd resistor is of length 6L and of radius 2r. The ratio of these two resistances R1/R2 is:

Explanation:

From the question we are told that:

1st's Length

1st's radius

2nd's Length

2nd's radius

Generally the equation for Resistance R is mathematically given by

Therefore

And

Therefore

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