City Guilds Model Questions Vol1 2023 Engineering Question 4
Practice practical question 4 from the 2023 City Guilds Model Questions Vol1 Engineering examination. This question covers Electrical Principles, Ohm’s Law, Resistivity, Temperature Effects .
A copper wire of length 2.00 m and cross‑sectional area 0.50 mm² is connected in a simple circuit with a voltmeter and an ammeter as shown. The following readings are obtained: - Voltage across the wire (V): 3.60 V - Current through the wire (I): 0.50 A Using these data: (a) Determine the resistance of the wire. (b) Calculate the resistivity of the copper material. (c) If the temperature of the wire rises by 30 °C and the temperature coefficient of resistance for copper is 0.004 °C⁻¹, estimate the new resistance. (d) Suggest two practical precautions that could be taken to minimise experimental error in the resistance measurement.
Question Parts
Detailed Solution & Marking Scheme
Get the step-by-step solution, key points required by examiners and detailed marking guidance through the Edcrib AI Tutor.
Reveal AnswerAbout This Question
This is City Guilds Model Questions Vol1 2023 Engineering Question 4. It is one of the practical questions from the 2023 City Guilds Model Questions Vol1 Engineering examination.
The question covers Electrical Principles, Ohm’s Law, Resistivity, Temperature Effects .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.