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Standard XII

Physics

Properties of Field Lines

For the given...

Question

For the given spherical Gaussian surface around and centred at infinite positive line charge, the angle between electric field $\to E$ and area vector $\to A$ , at all the point on the surface is

equal but not

0^{\circ}

90^{\circ}

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not equal

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0^{\circ}

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90^{\circ}

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Solution

The correct option is B not equal
The electric field lines configuration of the infinite line charge and area vector $\to A$ at some points of the Gaussian suface is shown in figure.

From the figure, we can see that the angle between electric field $\to E$ and area vector $\to A$ at all points of the Gaussian surface is not equal.

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For the given spherical Gaussian surface around and centred at infinite positive line charge, the angle between electric field →E and area vector →A, at all the point on the surface is

For the given spherical Gaussian surface around and centred at infinite positive line charge, the angle between electric field $\to E$ and area vector $\to A$ , at all the point on the surface is