Science Combined 0653: P2. Work, energy and power Topical Past Paper Questions

Figure 9.1 shows an electric kettle connected to a mains plug socket. Figure 9.1 The kettle is switched on. (a) Describe how thermal energy is transferred from the heating element to the water. Use ideas about particles in your answer. [2] (b) The kettle has a power rating of 2.2…

A student determines the mass M of a metre rule using a balancing method. The student uses the apparatus shown in Fig. 4.1. Fig. 4.1 ## Procedure The student: • places the 100g mass and the 50g mass at distance a from each end of the metre rule, where $a = 5.0\mathrm{~cm}$ • bala…

(b) Fig. 6.1 shows an electrical circuit containing a heater. Fig. 6.1 The current in the heater is 8.0A. Calculate the power in kilowatts supplied to the heater. .....kW [3] (c) Fig. 6.2 shows an electrical circuit for some components inside a house. Fig. 6.2 (i) State the name…