Question

question 5 learners want to construct an electric heater using one of two wires, a and b, of different resistances. they conduct experiments and draw the graphs as shown below graph of v versus i for resistors a and b 5.1.1 apart from temperature, write down two other factors that the learners should consider to ensure a fair test when choosing which wire to use.

Explanation:

In an electrical experiment comparing wires for an electric - heater, to ensure a fair test, factors like the length and cross - sectional area of the wires matter as they affect resistance. Also, the material of the wire can influence electrical properties.

Answer:

1. Length of the wires
2. Cross - sectional area of the wires