Question

Describe an application where a parallel circuit might work better than a series circuit.

Answer 1

The application is electricity in the home.  Every light bulb, appliance,
and wall-outlet in your house is in parallel with all the others. 

If any electrical devices in your house were in series, then whenever
you turned any of those off, they would ALL go off. 

Also, the ones that needed the least power, like a night light, would get
the most, and the ones that needed the most power, like the refrigerator,
would get the least.