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# A battery of e.m.f. 12 volts and internal resistance 1.2 ohms is connected to an...

### Question

A battery of e.m.f. 12 volts and internal resistance 1.2 ohms is connected to an external resistance of 4 ohms. Find the current flowing in the circuit.

### Options

A)
2.3A
B)
2.7A
C)
3.0A
D)
2.5A

The correct answer is A.

### Explanation:

$$V = IR \Rightarrow I = \cfrac{V}{R}$$
$$= \cfrac{12}{1.2 + 4} = \cfrac{12}{5.2} = 2.3$$A

## Dicussion (1)

• $$V = IR \Rightarrow I = \cfrac{V}{R}$$
$$= \cfrac{12}{1.2 + 4} = \cfrac{12}{5.2} = 2.3$$A