Q.

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A parallel plate capacitor has 1 μF capacitance. One of its two plates is given +2 μC charge and the other plate, +4 μC charge. The potential difference developed across the capacitor is

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a

3 V

b

2V

c

5 V

d

1 V

answer is D.

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Detailed Solution

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Potential difference

V1 - V2= (E1 - E2)d

= σ12 ε0 - σ22 ε0d

= σ12 ε0 - σ22 ε0d =q1 d20 - q2 d20 = 4 - 22 x 1 = 1 V

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A parallel plate capacitor has 1 μF capacitance. One of its two plates is given +2 μC charge and the other plate, +4 μC charge. The potential difference developed across the capacitor is