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A coil P is connected to a cell and a switch - AQA - A-Level Physics - Question 26 - 2019 - Paper 2
Question 26
A coil P is connected to a cell and a switch. A second closed coil Q is parallel to P and is arranged on the same axis. When the switch is closed, coil Q experience... show full transcript
Worked Solution & Example Answer:A coil P is connected to a cell and a switch - AQA - A-Level Physics - Question 26 - 2019 - Paper 2
Step 1
Which row describes the force on Q?
Answer
When the switch is closed, a current flows through coil P, producing a magnetic field. According to electromagnetic induction, coil Q experiences a force due to the changing magnetic field. As a result, the force on coil Q will initially increase as the current stabilizes and then maintain a constant value. Therefore, the correct answer is:
- B: increases to constant value to the right.