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A student measures the magnetic flux density around a current carrying conductor at increasing distances from the conductor - OCR Gateway - GCSE Physics - Question 4 - 2019 - Paper 3
Question 4
A student measures the magnetic flux density around a current carrying conductor at increasing distances from the conductor. She plots her results. The current in ... show full transcript
Worked Solution & Example Answer:A student measures the magnetic flux density around a current carrying conductor at increasing distances from the conductor - OCR Gateway - GCSE Physics - Question 4 - 2019 - Paper 3
Step 1
Identify the effect of current on magnetic field strength
Answer
As the current in the conductor decreases, the magnetic field strength around it also decreases. This means that the graph plotting the magnetic field strength against distance would show a diminishing strength as the distance increases.
Step 2
Determine the shape of the graph after decreasing current
Answer
The original graph was a curve descending towards the right. With decreased current, this curve will still descend but at a lesser steepness, indicating that the magnetic field strength approaches zero at a farther distance from the conductor.
Step 3