We have a chargeable battery of emf 12 V and internal resistance of `1 Omega` The battery can take a maximum of 20 A current during the charging process. If we have a charger, which can maintain a potential difference of 60 V, then what resistance is needed to be connected in series with the charger to charge the given battery ?
what terminal potential difference do you expect across the terminal of battery being charged ?

Explanation

To solve the problem step by step, we will follow these calculations:

### Step 1: Understand the Given Data
- EMF of the battery (E) = 12 V
- Internal resistance of the battery (r) = 1 Ω
- Maximum current during charging (I) = 20 A
- Voltage of the charger (V_charger) = 60 V

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