Physics 9702: ELECTRONICS Topical Past Paper Questions

An incomplete circuit diagram of a bridge rectifier is shown in Fig. 8.1. Fig. 8.1 (a) Complete Fig. 8.1 for the bridge rectifier such that the point A is at a positive potential with respect to point B. [2] (b) The variation with time t of the potential difference (p.d.) V acros…

(a) (i) State what is meant by rectification of an alternating voltage. (ii) State the difference between half-wave rectification and full-wave rectification. (b) (i) Complete Fig. 6.1 to show a circuit that produces half-wave rectification of an alternating input voltage $ V_{IN…

(a) State what is meant by the de Broglie wavelength. [1] (b) Fig. 7.1 shows a glass tube in which electrons are accelerated through a high p.d. to form a beam that is incident on a thin graphite crystal. Fig. 7.1 (not to scale) After passing through the graphite crystal, the ele…