Sunday, October 28, 2012

Charging Batteries (Units May Not Be Used As They Are In Real Life)

Planet XY90 is charging two large 10,000 volt batteries that will power welding tools on the Mechanics/Machinery Planet. However, one battery charges at the rate of 5 volts per second and the other charges at the rate of 15 volts per second. The one that charges at 5vps is already half full as it was not fully used by the previous user.

At what point will both batteries have the same amount of charge (How long will it take to charge the batteries to an equal amount of voltage)? Keep in mind that one has 5,000v of charge while the other has none.