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.
2.0 A
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.
2.3 Ω
Answer the question.
12000 A
The component measure ____ in the unit of Amperes
Current
The component measure Current in the unit of ____
Amperes
The component measure Potential difference (voltage) in the unit of ____
Volts
The component measure _______ in the unit of Volts
Potential difference (Voltage)
The diagrams represent four copper wires. Which wire has the greatest resistance?
C
The diagrams represent four copper wires. Which wire has the lowest resistance?
B
The diagrams show the readings on an ammeter in a series circuit before and after the switch in the circuit has been closed.What is the current in the circuit when the switch is closed?
3.4A
The diagram shows a reading on an ammeter. What is the reading?
5.0A
What is the reading on the Ammeter?
4.4 A
The diagrams show three ammeters. Which ammeters show the same value of current?
1 and 2 only
