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Chapter 27: Q. 4 (page 761)

Is FIGURE Q27.4 a possible surface charge distribution for a current-carrying wire? If so, in which direction is the current? If not, why not?

Short Answer

Expert verified

No, in the wire, there is no net electric field.

Step by step solution

01

Concept Introduction 

The net electric field is the vector sum of the electric forces encountered by a particular charge when it encounters two or more interactions.

02

Explanation 

A positive ring is at a distance from the electric field.

The resultant electric field of E鈫�1and E鈫�2is E鈫�netwhich is along positive x-axis.

The resultant electric field of 2 and 3 charged rings is zero.

The resultant electric field of E鈫�3and E鈫�4is E鈫�net'which is along negative x-axis.

Finally the resultant of E鈫�netand E鈫�net'is zero.

03

Final Answer

So the internal electric field in the current carrying wire is zero. So no current flows through the wire.

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