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Class 12 Physics Practice Test: Cells, EMF and Internal Resistance
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Class 12 Physics Practice Test: Cells, EMF and Internal Resistance
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10 Questions

1. The emf of a battery is 86V and internal resistance 1 ohms in the figure shown below. Calculate the current drawn from the battery.
2. A group of N cells such its emf EN = 1.5rN is shown in the diagram below. What is the current I in the circuit?
3. A cell has an emf of 6V, internal resistance of 1 ohms and a current of 0.5 A passing through it. This cell is connected to a resistor. Find out the resistance of the resistor.
4. Pick out the dimensional formula of emf from the following.
5. Which is the factor that internal resistance does not depend on?
6. Which of the following is the correct statement regarding electrochemical cell?
7. A current of 3 A passes through an electric circuit for 5 minutes and does a work of 900J. What is the emf of the source?
8. Which of the following devices is the more accurate one for the measurement of emf?
9. Identify the correct statement from the following about discharging of a cell.
10. The emf of a cell depends upon concentration of the electrolyte.

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