Electric Potential — Flashcards

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Electric potential at a point is the work done by an external agent in carrying a unit positive test charge from infinity to that point in the electric field. Formula: V = W / q0 Here, V = potential, …

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SI unit: volt (V) Unit relation: 1 volt = 1 joule/coulomb Meaning: If 1 joule of work is done in carrying 1 coulomb of charge from infinity to a point, the potential at that point is 1 volt.

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Given: W = 24 J, q0 = 3 C Formula: V = W / q0 Step 1: Substitute values V = 24 J / 3 C Step 2: Divide V = 8 J C^-1 Answer: 8 V…

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Electric potential tells the direction in which charge tends to move. Positive charge always flows from higher potential to lower potential. Negative charge always flows from lower potential to higher…

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Earth is taken as the zero-potential reference body. This is a convention used for measuring potential. Its potential is considered zero regardless of how much charge is added to or removed from it.

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Potential difference between two points A and B is the work done by an external agent in carrying a unit positive test charge from B to A in an electric field. Formula: V_A - V_B = W / q0 SI unit: vol…

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Given: W = 10 J, q0 = 2 C Formula: V_A - V_B = W / q0 Step 1: Substitute values V_A - V_B = 10 J / 2 C Step 2: Divide V_A - V_B = 5 J C^-1 Answer: 5 V…

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If work W comes out negative, the work is done by the electric field itself. In that case, an external agent receives work instead of supplying it. This happens when a charge moves in the direction fa…