## Electricity Paper 2 Questions and Answers - Bunamfan Cluster Pre Mock Exam 2022

INSTRUCTIONS TO CANDIDATES

• This paper consist of five exercises
• Answer all the five exercises
• Each exercise takes 30 minutes

## Questions

EXERCISE 1

1. Using materials, components anmd equipment provided, perform the following tasks.
1. Connect the circuit in Figure.
Let the examiner check your work.
2. Close switch S and adjust the power supply to obtain values of voltage shown in Table 1 for each voltage obtained measure and record in the table the corresponding values of current (6 marks)
 Voltage(V) 1 3 5 7 8 10 Current I(mA)
3. Use the values in Table 1 and draw and draw agraph of current against voltage
4. Determine the gradient of the graph
5. Name the quantity expressed by the gradient the graph.

EXERCISE 2

1. Use the materials , tools and equipment provided to make the battery holder in Figure 2 tools, equipment andf materials provided to make the brackets shown in Figure 2. (20 marks)
Details of A
Seam; 10mm wide
Slot; 50mm from seamed joint

EXERCISE 3

1. Use the tools, equipment and materials provided to carry out the following tasks.
1. Terminate the three-core flexible cable to the top plug and the iron box
2. Turn the thermostat switch to ON position, measure and record the values of resistance between;
1. Live and Neutral at plug .....Ω
2. Live and earth at plug .... Ω
3. Earth at plug and iron box body ...Ω
4. Neutral at plug and iron box ...Ω

EXERCISE 4

1. Using the pre-fabricated circuit provided in Figure 3. Perform the following tasks
1. With the power supply OFF
1. Connect the milliameter between A and B (Observe the polarity) (1 mark)
2. Connect the voltmeter between C and D (Observe the polarity). Let the examiner check your work.
2. with power supply ON.
Adjust the variable resisror to obtain current values in Table 2 and in each case measure and record the corresponding  values of voltage.
Table 2
 Voltage(V) 1 3 5 7 8 10 Current I(mA)
3.
1. Plot the graph of current against voltage.
2. Use the graph to determine the value of current when the voltage is 5.0V (7 marks)
Value

EXERCISE 5

1. Figure 4 shows the layout of a final circuit. Using PVC sheathed cable wiring system , install the lamps to be controlled by the one way switch.

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