GEOLOGY

Detailed explanation-1: -In a series connection, the amount of current flowing through the two appliances is the same, whereas, in the case of a parallel connection the voltage across each appliance is the same. Also, a parallel circuit consumes more power than a series circuit while also being more robust.

Detailed explanation-2: -At the same voltage, the power dissipated by parallel-connected resistors is more than that of series-connected resistors.

Detailed explanation-3: -Remember the voltage increases when batteries are in series, but with batteries in parallel this is not the case.