A battery of e.m.f 3 V supplies current through a circuit in which the resistance can be changed. A high resistance voltmeter is connected across the battery. When the current is 1.5 A, the voltmeter reads 2.7 V. Find the internal resistance of the battery.

Explanation

To find the internal resistance of the battery, we can follow these steps:

### Step 1: Identify the given values
- E.M.F of the battery (V_battery) = 3 V
- Current (I) = 1.5 A
- Voltmeter reading (V) = 2.7 V

### Step 2: Calculate the resistance of the voltmeter
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