MHT CET 2025 Physics question
A particle of charge q moves with a velocity in a magnetic field , where 'a', 'b' and 'c' are constants. The magnitude of force experienced by particle is
Answer: (A)
Solution
The magnetic force is . a\hat{i}\times(b\hat{j}+c\hat{k})=ab(\hat{i}\times\hat{j})+ac(\hat{i}\times\hat{k})=ab\,\hat{k}-ac\,\hat{j}. Magnitude (the two components are perpendicular, so
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