Science
(i) Name and state the rule to determine the direction of force experienced by a current carrying straight conductor placed in a uniform magnetic field which is perpendicular to it.
(ii) An alpha particle while passing through a magnetic field gets projected towards north. In which direction will an electron project when it passes through the same magnetic field ?
Answer
(i) Fleming's left hand rule.
According to this rule : Stretch the thumb, fore finger and middle finger of your left hand such that they are mutually perpendicular. If the forefinger points in the direction of magnetic field and the middle finger in the direction of current, then the thumb will point in the direction of motion or force acting on conductor.
(ii) As the direction of the force on a negatively charged electron will be opposite to that of a positively charged alpha particle hence, an electron will experience a force that pushes it towards the south when it passes through the same magnetic field as that of alpha particle.
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