What is the result of connecting batteries in parallel?

Connecting batteries in parallel results in an increase in the total current available. When batteries are placed in parallel, their voltages remain the same, but the capacity to deliver current is effectively increased because the current output of each battery combines. Each individual battery contributes its current capacity to the total, enabling a higher current flow without altering the voltage level.

This configuration is beneficial when a higher current is needed for applications like starting a motor or powering devices that require more electrical power. The total electrical capacity, in terms of amp-hours, is also increased, allowing for a longer operational time before the batteries need recharging. This is opposed to connecting batteries in series, which would increase voltage but not the current.

While connecting batteries in parallel does not inherently decrease total resistance, the equivalent resistance of the assembly decreases, allowing for better current delivery. However, the primary takeaway is the significant increase in the total current available to the load, which is why the correct choice centers on the increase in current.