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Can the potential difference across a ba...

Can the potential difference across a battery be greater than its emf?

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Two cells of unequal emfs epsilon_1 and epsilon_2 , and internal resistance r_1 and r_2 are joined as shown. V_A and V_B are the potential at A and B respectively. (i) One cell will continuously supply energy to the other (ii) The potential difference across both the cells will be equal (iii) The potential difference across one cell with be greater than its emf. (iv) V_A - V_B = (epsilon_1 r_1 + epsilon_2 r_2)/(r_1 + r_2) .

Assertion: In an AC circuit, potential difference across the capacitor may be greater than the applied voltage. Reason : V_C=IX_C , wheereas V= IZ and X_C can be greater than Z also.

State the condition under which the terminal potential difference across a battery and its emf are equal.

In the circuit shown the ammeter 'A' reads 2A . XY is a circuit which can either be a resistance of a battery. In the direction of the current there will always be a potential drop across the resistance. Reagarding battery you have to remember that the potential difference across its terminals can be more than its emf or less depending upon whether the battery is delivering the current, or is being charged in the circuit Assuming XY to be a battery with 2 Omega internal resistance which is being charged, its emf is:

In the circuit shown the ammeter 'A' reads 2A . XY is a circuit which can either be a resistance of a battery. In the direction of the current there will always be a potential drop across the resistance. Reagarding battery you have to remember that the potential difference across its terminals can be more than its emf or less depending upon whether the battery is delivering the current, or is being charged in the circuit The potential difference as you move from Y to X while considering it to be a battery is :

In the circuit shown the ammeter 'A' reads 2A . XY is a circuit which can either be a resistance of a battery. In the direction of the current there will always be a potential drop across the resistance. Reagarding battery you have to remember that the potential difference across its terminals can be more than its emf or less depending upon whether the battery is delivering the current, or is being charged in the circuit Assuming XY to be a resistor, its value is:

What is terminal potential differnce of a cell? Can its value be greater than the emf of a cell? Explian.

Which of the following statement is/are correct? I Potential difference across the terminals of a battery can be greater than its emf. II, When current is taken from a battery. V=E-Ir

A shortage battey with an emf of 10V and an internal resistance 1Omega is connected across an extenal resistance R and liberates of 9W power. Find the potential difference across the teminals of the battery and the value or values of R.

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