A straight copper wire is placed at right angles to a uniform magnetic field between two magnetic poles.
The wire is 0.250 m long within the field and carries a current of 75.0 mA.
The magnetic force exerted on the wire is 4.50 × 10-4 N.
Calculate the magnetic flux density of the magnetic field.
Use the equation:
F=B×I×l F = B \times I \times l F=B×I×lPractise Edexcel GCSE Physics The motor effect with exam-style questions for Foundation and Higher tier. 30 questions, matched to the Edexcel GCSE Physics (1PH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.