Question

When batteries are connected in series, in a way that the positive terminal of one battery is connected to the negative terminal of another battery, the potential difference of the circuit is ___ as compared to the circuit in which the same set of batteries are connected in parallel.

• A. higher
• B. lower
• C. the same
• D. unknown

Answer 1

The correct option is A higher

When batteries are connected in series, in such a way that the positive terminal of one battery is connected to the negative terminal of the battery next to it, the potential differences add up.
Note: When the batteries are connected in series and positive terminals of two batteries are connected, the potential difference is reduced. If the potential differences across the terminals of those batteries are equal, the effective potential difference in such a connection will be zero.