CBSE Class 12 science: Combination of Cells Videos | Combination of Cells - Exam Decoded

• solve
  
• what is meant by electric power
• Doubt
  
• You are given 48 cells each of 1.48 volt and resistance 0.3 ohm. How would you arrange them to produce greatest current in a circuit of 5 ohm resistance?
• Why we use a combination of cells?
• For the series combination of cells, derive the condition in which the current through externally connected resistance is maximum.
• Three identical cells, each of emf 2 V and internal resistance 0.2 ohm are connected in series to an external resistor of 5.4 ohm. Calculate the current in the circuit.
• In given circuit the cells E₁ and E₂ have emfs 4 V and 8 V and the internal resistance 0.5 ohm and 10 ohm respectively. Calculate the current in each resistance.
• In the circuit shown, each battery is of 5 V and has internal resistance of 0.2 ohm. What will be the reading of an ideal voltmeter connecting across the battery?
• In which condition, the cells connected in parallel has maximum current?

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