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

9.2.2 Electrical Power – Check yourself

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1.
Which is not an expression for electrical power?
VI
I²R
V²/R
IR²
2.
A 12 V supply drives 3.0 A through a resistor. Power is
4 W
15 W
36 W
144 W
3.
A 1.0 kW heater used for 30 minutes uses
0.5 kW h
30 kW h
1.8 × 10⁶ J
both A and C
4.
A lamp of fixed resistance has its p.d. doubled. Power becomes
2 times
4 times
8 times
unchanged
5.
Power transmission lines use high voltage to
increase the current
reduce the current and so reduce I²R losses
make cables thicker
increase resistance
6.
A 230 V appliance rated 1500 W takes about 6.5 A. Of fuses rated 3 A, 5 A, 13 A and 30 A, the most suitable is
3 A
5 A
13 A
30 A
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