AQA
A-Level
PHYSICS
Electricity
QUESTION PAPER
Circuits
Time allowed
49 minutes
Score Percentage
/41 %
4.1 | CELL BIOLOGY | QUESTION PAPER 1 1
, (a) (i) Describe how you would make a direct measurement of the emf ɛ of a cell,
stating the type of meter you would use.
...............................................................................................................
...............................................................................................................
(1)
(ii) Explain why this meter must have a very high resistance.
...............................................................................................................
...............................................................................................................
(1)
(b) A student is provided with the circuit shown in the diagram below.
The student wishes to determine the efficiency of this circuit.
In this circuit, useful power is dissipated in the external resistor. The total power
input is the power produced by the battery.
A-Level
PHYSICS
Electricity
QUESTION PAPER
Circuits
Time allowed
49 minutes
Score Percentage
/41 %
4.1 | CELL BIOLOGY | QUESTION PAPER 1 1
, (a) (i) Describe how you would make a direct measurement of the emf ɛ of a cell,
stating the type of meter you would use.
...............................................................................................................
...............................................................................................................
(1)
(ii) Explain why this meter must have a very high resistance.
...............................................................................................................
...............................................................................................................
(1)
(b) A student is provided with the circuit shown in the diagram below.
The student wishes to determine the efficiency of this circuit.
In this circuit, useful power is dissipated in the external resistor. The total power
input is the power produced by the battery.