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The potential difference between two plates of parallel plate capacitor is 2 V. As shown in figure electrons are placed at point P and Q. So

Asked in GUJCET 2025 · Relation between field and potential

• (1) Electric forces acting on both the electrons are same.
• (2) Electric force acting on the electron at point P is greater than the electron at point Q.
• (3) Electric force acting on the electron at point P is less than the electron at point Q.
• (4) Electric forces acting on both the electrons are zero.

Step-by-step solution

Why the other options are wrong

• (2) This assumes the field is stronger close to the positive plate, as it would be close to a point charge. Between large parallel plates the field E = V/d is uniform, so the force eE is the same wherever the electron sits in the gap.
• (3) This assumes the field grows with distance from the positive plate. Between parallel plates the field is uniform, E = V/d, so the force at P and at Q is the same.
• (4) The field in the gap is E = V/d with V = 2 V, which is not zero. It is the field inside a conductor, or outside an ideal pair of plates, that vanishes — not the field between them.

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