A 6.00-V battery is connected across a 2.00-k resistor. (a) How many electrons per second flow

Question:

A 6.00-V battery is connected across a 2.00-k Ω resistor.
(a) How many electrons per second flow through the circuit?
(b) How many joules of heat are produced for each electron?
(c) If the circuit operates for 30.0 min, how many moles of electrons will have flowed through the resistor?
(d) What voltage would the battery need to deliver for the power to be 1.00 × 102W?