straight conductor carries current from north to south. If is kept in the magnetic field directed along East. What will be the
direction of force acting on the conductor?
Answers
Answer:
Magnetic Effects of Electric Current
A current carrying straight conductor is placed in east-west direction. What will be the direction of the force experienced by this conductor due to earth's magnetic field? How will this force get affected on:
(i) reversing the direction of flow of current?
(ii) doubling the magnitude of current?
The direction of earth’s magnetic field points from geographical south to geographical north. Given that, the current carrying straight conductor is placed in the east-west direction. Therefore, according to Fleming's left hand rule the current carrying conductor will deflect downwards.
(i) On reversing the direction of current, the conductor gets deflected in the upward direction. i.e., the direction of conductor reverses.
(ii) If the magnitude of current is doubled, it will result in doubling the magnitude of the force.
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The direction of the force will be vertically upwards.
• According to the Fleming's left hand rule,if we keep our left hand's thumb,index finger and middle finger,in perpendicular position with each other. Then, the middle finger will denote the direction of the current,the index finger will denote the direction of magnetic field and the thumb will denote the direction of force.
• And, if we practically apply the directions given in the question,then the thumb will be facing upwards direction.
• So,the force will be acting towards the vertically upward direction.