Curriculum
Course: AS Physics 9702
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Curriculum

AS Physics 9702

1. Physical quantities and kinematics

0/41 Dr Dabour Hub Science Diagram and Course Material

2. Dynamics, forces and pressure

0/46 Dr Dabour Hub Science Diagram and Course Material

3. Work, energy, power and deformation

0/31 Dr Dabour Hub Science Diagram and Course Material

4. Waves and superposition

0/39 Dr Dabour Hub Science Diagram and Course Material

5. Electricity and D.C. circuits

0/49 Dr Dabour Hub Science Diagram and Course Material

7. Circular motion and gravitational fields (A Level)

0/25 Dr Dabour Hub Science Diagram and Course Material

8. Thermal physics (A Level)

0/37 Dr Dabour Hub Science Diagram and Course Material

10. Electric fields and capacitance (A Level)

0/36 Dr Dabour Hub Science Diagram and Course Material

11. Magnetic fields and alternating currents (A Level)

0/46 Dr Dabour Hub Science Diagram and Course Material

12. Quantum and nuclear physics (A Level)

0/44 Dr Dabour Hub Science Diagram and Course Material

13. Medical physics and astronomy (A Level)

0/42 Dr Dabour Hub Science Diagram and Course Material
Quiz

10.3.2 Potentiometer – Check yourself

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1.
At the balance point of a potentiometer, the current in the test cell is…
equal to the driver current
zero
maximum
equal to E/r
2.
A potentiometer wire is 1.00 m long with 1.50 V across it. A balance length of 0.40 m corresponds to…
0.30 V
0.90 V
3.75 V
0.60 V
3.
Why is a potentiometer more accurate than a voltmeter for measuring e.m.f.?
It has a higher resistance than the cell
It draws no current at the balance point
It gives a larger reading
It uses a smaller driver cell
4.
The driver cell has e.m.f. 2.0 V. Which cell can be measured?
Cell of 1.5 V
Cell of 3.0 V
Cell of 2.5 V
None of them
5.
Cells balance at 30 cm and 45 cm. The ratio E1/E2 is…
3/2
0.75
2/3
1.5 only if the wire is 1 m
6.
On a graph of balance length against the e.m.f. of several standard cells, the points should lie on…
a straight line through the origin
a curve flattening off
a line with a positive intercept
a horizontal line
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