Amy, the Daleks are right on my tail! Quick, we need to reset the time circuits. Oh, no, I left my sonic screwdriver behind.

艾米，戴立克正追着我跑呢！快，我们得回去重设时间线。不，我忘拿我的音速起子了。

And since charge transferred over time is just current, it follows that the power used by the bulb is equal to the current in the circuit times the voltage across the system.

并且由于及时转移的电荷只是电流，因此灯使用的功率等于电路中的电流乘以系统两端的电压。