Answer to Question #76311 in Electric Circuits for Dylan

Question

A student investigated the power of another battery charger using the equipment in Figure 2 (power supply, battery charger, joulemeter, battery and clock) describe how the equipment can be used to find the power of this batter charger.

Answer 1

Required equipment are power supply, battery charger, joule meter, battery and clock.
Here, power supply is required for main supply.
Battery charger provides charge (Q) to the battery.
Joule meter provides Energy (W).
Clock provides time (t).

Now, we know, Power (P) = Voltage x Current
We know, voltage = W/Q and current = Q/t .
So, P = W/Q x Q/t