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Rate of flow of charge past a point in the circuit.

In what type of circuit is the current the same throughout?

Series

Define electrical energy.

Electrical Energy = Charge x Voltage (W = QV)

What is emf of a power supply a measure of?

Total energy that it supplied to each coulomb of charge

A power supply has an emf of 0.001V. When Ekrem's X-Box is connected to this a current of 5A is measured using an ammeter. Calculate the resistance of the circuit.

0.0002 Ohms (By the word Ohms i mean the symbol)

Enter Yianni and Erol. Erol says 'Yo Ktori, you know that due to the incompetance of X-box,the free ammeters that they supply with the x-boxes give off a faulty reading.' Erol is correct and the actual current in the circuit is 5x10^-3A. Calculate resista

0.2 Ohms

Define Power

Power = energy transferred/Time taken

How do you work out efficiency?

Energy usefully transferred/Total energy transferred

When current is proportional to voltage what law is obeyed?