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

21.2.2 Smoothing – Check yourself

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1.
A smoothing capacitor is connected
in parallel with the load
across the diode
in series with the supply
in series with the load
2.
Which change reduces the ripple in a smoothed supply?
A lower supply frequency
A smaller load resistance
A smaller capacitor
A larger capacitor
3.
Compared with half-wave, full-wave rectification with the same capacitor gives ripple that is
twice as large
half as large
unchanged
zero
4.
A load takes 0.10 A from a smoothed full-wave 50 Hz supply with a 1000 μF capacitor. The ripple is about
1.0 V
0.50 V
2.0 V
0.10 V
5.
During the falling part of a smoothed waveform, the diodes are
removed
all conducting
reverse biased and the capacitor supplies the load
forward biased
6.
A time constant RC much longer than the recharge interval gives
a negative output
a larger ripple
a smaller ripple
no output
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