Electrical Engineering ⇒ Topic : Potential Rise and Potential Drop
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| Seema
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Potential Rise and Potential Drop Fig. (a) shows a circuit with a cell and a resistor. The cell provides a potential difference of 1.5 V. Since it is an energy source, there is a rise in potential issociited with a cell The cell's potential difference represents an e.m.f. so that symbol E could be used. The resistor is also associated with a potential difference. Since it is a consumer (converter of energy, there is a drop in potential across the resistor.We can combine the idea of potential rise or drop with the popular term "voltage". It is customary to refer to the potential difference across the cell as a voltage rise and to the potential difference across the resistor as a voltage drop. figure (a) Note. The term voltage refers to a potential difference across two points. There is no such thing as a voltage at one point. In cases where a single point is specified, some reference must be used as the other point. Unless stated otherwise, the ground or common point in any circuit is the reference when specifying a voltage at some other point | |
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| Seema
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Potential Rise and Potential Drop Fig. (a) shows a circuit with a cell and a resistor. The cell provides a potential difference of 1.5 V. Since it is an energy source, there is a rise in potential issociited with a cell The cell's potential difference represents an e.m.f. so that symbol E could be used. The resistor is also associated with a potential difference. Since it is a consumer (converter of energy, there is a drop in potential across the resistor.We can combine the idea of potential rise or drop with the popular term "voltage". It is customary to refer to the potential difference across the cell as a voltage rise and to the potential difference across the resistor as a voltage drop. figure (a) Note. The term voltage refers to a potential difference across two points. There is no such thing as a voltage at one point. In cases where a single point is specified, some reference must be used as the other point. Unless stated otherwise, the ground or common point in any circuit is the reference when specifying a voltage at some other point | |
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