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Standard XII

Physics

Flux as the Flow

Two identical...

Question

Two identical point charges are placed at a separation of d. P is a point on the line joining the charges, at a distance x from any one charge. The field at P is E. E is plotted against x for values of x from close to zero to slightly less than d. Which of the following represents the resulting curve?

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Solution

The correct option is D
At mid-point E = 0. Before mid-point, E is positive. This is maximum near the charge and decreases towards mid-point. After mid-point, E is negative. The curve crosses x-axis at $x = \frac{d}{2}$ . From centre to end, E decreases. The variation is shown by curve d.

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The correct option is D At mid-point E = 0. Before mid-point, E is positive. This is maximum near the charge and decreases towards mid-point. After mid-point, E is negative. The curve crosses x-axis at x=d2. From centre to end, E decreases. The variation is shown by curve d.

The correct option is D
At mid-point E = 0. Before mid-point, E is positive. This is maximum near the charge and decreases towards mid-point. After mid-point, E is negative. The curve crosses x-axis at $x = \frac{d}{2}$ . From centre to end, E decreases. The variation is shown by curve d.