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QAIPMT-2005-Ph-2539: NEET 2005 Physics - Class 12 AIPMT-2005-Ph-2539 Solution: A very long straight wire carries a current I. At the instant…
A very long straight wire carries a current I. At the instant when a charge +Q at point P has velocity , as shown, the force on the charge is
Multiple Choice Options
- A along Oy
- B opposite to Oy
- C along Ox
- D opposite to Ox
Step-by-Step Verified Solution
The direction of B _ is due to i is acting inwards i.e. into the paper along ( _ k ^ ) .
_ The magnetic force
F _ = Q ( v _ _ B _ ) = Q ( v _ i ^ ) _ B ( _ k ^ ) = Q v B j ^
So, F _ is along Oy direction.