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(A) A vertical wire is carrying a current in the upward direction. It is placed in a magnetic field, pointing towards the East direction. Find out the direction of force on the wire.
(B) Out of the two current carrying circular coils, coil 'A' has 10 turns while coil B has 15 turns. Which of the two coils will produce a stronger magnetic field at its centre if same current is flowing through both the coils ? Explain with reason.
(B) Out of the two current carrying circular coils, coil 'A' has 10 turns while coil B has 15 turns. Which of the two coils will produce a stronger magnetic field at its centre if same current is flowing through both the coils ? Explain with reason.
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Towards North (1 Mark)
Coil B
Strength of Magnetic field is directly proportional to the number of turns. (1 Mark)
The given figure shows that field has two directions at O. The compass needle may point towards two directions (along OB and along OD) which is not possible. This is an unreal situation.
Conclusion: Two magnetic field lines never intersect. (1 Mark)
Coil B
Strength of Magnetic field is directly proportional to the number of turns. (1 Mark)
The given figure shows that field has two directions at O. The compass needle may point towards two directions (along OB and along OD) which is not possible. This is an unreal situation.
Conclusion: Two magnetic field lines never intersect. (1 Mark)