A 9.0V battery supplies a 5.0mA current to a circuit for 2.0hr . How much charge has been transferred from the negative to the positive terminal? How much work has been done on the charges that passed through the battery?

Question

A 9.0V battery supplies a 5.0mA current to a circuit for 2.0hr .  How much charge has been transferred from the negative to the positive terminal? How much work has been done on the charges that passed through the battery?

michele_laino · Answer

charge is equal to the product between current and time

michele_laino · Answer

the requested work W is equal to the energy E lost by the battery, which is given by the subsequent product:
$$W = E = VI\Delta t$$

michele_laino · Answer

where V is the voltage, I is the current, and \Delta t is time

anonymous · Answer

(9)(.005)(60*60*2)?

anonymous · Answer

v*a*t that is