The diagrams show three ammeters. Which ammeters show the same value of current?

The component measure Potential difference (voltage)  in the unit of ____

The component measure ____ in the unit of Amperes

What is the reading on the Ammeter?

The component measure Current in the unit of ____

What is an electric field?

The diagrams represent four copper wires. Which wire has the lowest resistance?

The diagram shows a reading on an ammeter. What is the reading?

The Figure shows a circuit containing a battery of electromotive force (e.m.f.) 12V and a heater of resistance 6.0 Ω. Calculate the current in the heater.

Answer the question.

The Figure shows a circuit. The two lamps shown are identical. Each lamp has a potential difference (p.d.) of 3.0 V across it and a current of 2.0 A in it. PQ is a length of uniform metal wire. The resistance of PQ is R.

The component measure _______ in the unit of Volts