(c) Fig. 1(c) is an electric circuit that follow. 3 (i) State one function for each of the parts labelled I, II, III and IV. (ii) If the voltmeter reads 2.4 V and the ammeter reads 0.8 A when the circuit is closed, calculate the value of the part labelled IV. [4 marks] [3 marks] (iii) State one way of conserving the value of the part labelled I in the circuit. (iv) State two observations that can be made when the circuit is closed. -[1 mark] [2 marks]

## Step1: Identify the Functions of Circuit Parts### Analyze the circuit diagram to identify the functions of parts I, II, III, and IV. Part I is typically the power source (battery), Part II is often a resistor, Part III could be a switch, and Part IV might be another resistor or a component whose value we need to calculate.## Step2: Calculate the Value of Part IV### Use Ohm's Law, , to find the resistance of Part IV. Given and , calculate as .## Step3: Conserve the Value of Part I### To conserve the battery (Part I), reduce the current draw by using energy-efficient components or turning off the circuit when not in use.## Step4: Observations When the Circuit is Closed### When the circuit is closed, current flows through the circuit, and the components (like resistors) will exhibit their respective behaviors (e.g., resistors will dissipate heat).#