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Difference between emf and pd

ananthesh asked:

“can you please explain about emf and PD of a cell?”

Answer:

EMF stands for electromotive force.

EMF of a cell is equal to the potential difference between the two terminals of a cell when no current is drawn from it.

Pd (potential difference) between any two points on a circuit is defined as the work done per unit charge in carrying a positive test charge from one point to the other. With reference to a cell, the potential difference between the terminals of a cell when a current is drawn from it is called terminal voltage.

Comments

  1. can you explain the function of resistor in LCR and RC circuit. why time constant is taken only at o.36q in decay and 0.64 in growth of charge

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