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Standard XII

Mathematics

Continuity in an Interval

Point charges...

Question

Point charges of $+ 50 μ C, - 250 μ C, + 200 μ C$ are placed on the circumference of a circle of radius 0.5m to form the vertices of an equilateral triangle.The electric potential at the center of the circle is

4.5×10⁶ V

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9×10⁶ V

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zero

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none of these

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Solution

The correct option is C
zero

$V_{0} = K [\frac{250 μ C}{r} - \frac{50 μ C}{r} - \frac{200 μ C}{r}] = 0$

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Point charges of +50μC,−250μC,+200μC are placed on the circumference of a circle of radius 0.5m to form the vertices of an equilateral triangle.The electric potential at the center of the circle is

The correct option is C zero V0=K[250μCr−50μCr−200μCr]=0

Point charges of $+ 50 μ C, - 250 μ C, + 200 μ C$ are placed on the circumference of a circle of radius 0.5m to form the vertices of an equilateral triangle.The electric potential at the center of the circle is

The correct option is C
zero

$V_{0} = K [\frac{250 μ C}{r} - \frac{50 μ C}{r} - \frac{200 μ C}{r}] = 0$