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Chapter 31: Q. 4 (page 900)

What is the current through surface in FIGURE Q31.4 if you curl your right fingers in the direction of the arrow?

Short Answer

Expert verified

The current through the surface is -2A.

Step by step solution

01

Step 1. Given infomation

The current is flowing through the wire only. So the current entering the surface is 2A from the left side. And finally the magnitude of current coming out of the surface is 2A toward right hand side.

02

Step 2. Explanation

The overall current passing through the surface S is 2A. If we curl our fingers in the direction of arrows then thumb gives the direction of the current pointed towards left. So current passing through the surface is -2A.

So, the current through the surface is -2A.

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