1. A tube with a 1.00mm diameter filled with a saline solution of resistivity 9.75×10-7?·m has...

1.

A tube with a 1.00mm diameter filled with a saline solution of resistivity 9.75×10^-7?·m has an electric field of 22.5V/m when a potential difference is applied on either end of the tube.

what is the current flowing through the saline solution

2.

A tungsten wire of length (1/2)L and radius r is attached to another tungsten wire of length (1/2)L and radius 2r, forming one long wire of length L.

A potential difference is applied across the two ends of the combined wire. what is the ratio of the electric field within the wire of radius 2r to the electric field within the wire of radius r

Expert Solution

genius_generous answered 2 years ago

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