electrical energy Flashcards
1
Q
what is the amount of electrical energy used by a component or an appliance depend on?
A
1) the current
2) the voltage
3) the amount of time the device is used for.
2
Q
state the equation energy transfer is calculated by.
A
energy transferred (E) = current (I) x voltage (V) x time (t) or power x time
3
Q
what is the unit of energy?
A
joule (J)
