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Question 1
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AIM: To determine the resistance of a resistor.
- Copy Table 1 into your answer booklet.
Table 1
Resistor Colour Code |
Nominal Value |
Tolerance Range |
Actual Value |
R1
Red, Violet, Red, Gold |
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R2
Brown, Black, Orange, Gold |
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- Using the colour codes, determine the nominal value of R1 and record in Table 1.
- Measure the actual value of the resistor R1 using the digital multimeter and record the result in Table 1.
- Repeat steps (b) and (c) for resistor R2.
- Complete Table 1.
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The expected answers were:
(a) Table 1
Resistor colour code |
Nominal value |
Tolerance range |
Actual value |
R1
Red, Violet, Red, Gold |
2.7 kΩ |
2.7 kΩ 5%
OR
2565 Ω to 2835 Ω |
2.69 kΩ |
R2
Brown, Black, Orange, Gold |
10 kΩ |
10 kΩ 5%
OR
9500 Ω to 10500 Ω |
9.82 kΩ |
The candidates, as reported, understood the question and carried out the actions required. But unfortunately, some of the candidates did not record accurate voltage and current readings.
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