For the circuit shown in figure, the potential difference between points \( a \) and \( b \) is ...

For the circuit shown in figure, the potential difference between points \( a \) and \( b \) is :-
(1) \( 2.4 \mathrm{~V} \)
(2) \( 2.8 \mathrm{~V} \)
(3) \( 2 \mathrm{~V} \)
(4) \( 3.2 \mathrm{~V} \)