In cylindrical coordinate system, the potential produced by a uniform ring charge is given by \(\;\phi = \;f\left( {r,z} \right)\), where \(f\) is a continuous function of \(r\) and \(z\). Let \(\vec E\) be the resulting electric field. Then the magnitude of \(\nabla \times {\rm{\vec E}}\)

In cylindrical coordinate system, the potential produced by a uniform

1.	In cylindrical coordinate system, the potential produced by a uniform ring charge is given by \(\;\phi = \;f\left( {r,z} \right)\), where \(f\) is a continuous function of \(r\) and \(z\). Let \(\vec E\) be the resulting electric field. Then the magnitude of \(\nabla \times {\rm{\vec E}}\)
A.	increases with r
B.	is 0
C.	is 3
D.	decreases with z
Answer» C. is 3

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In cylindrical coordinate system, the potential produced by a uniform ring charge is given by \(\;\phi = \;f\left( {r,z} \right)\), where \(f\) is a continuous function of \(r\) and \(z\). Let \(\vec E\) be the resulting electric field. Then the magnitude of \(\nabla \times {\rm{\vec E}}\)

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