PHYSICS F5 I ELECTROMAGNETISM I FORCE ACTING ON A CCC IN A MAGNETIC FIELD I

Knowledge you should gained after following this lesson;

1. When a current-carrying conductor is placed in a magnetic field, it experienced a force. The direction of the force depends on the directions of the current and the magnetic field.

2. The interaction between two magnetic fields formed a resultant field called as a catapult field. This catapult field exerts a force on the current-carrying conductor from the region of stronger field towards the region of weaker field.

3. Current coming out of plane (paper) is shown by the 'dot' mark, while current going into the plane (paper) is shown by the 'X' mark.

4. The direction of the force acting on a current-carrying conductor can be deduced using Fleming's Left-Hand Rule, where all three fingers are at the right angles to one another;
Forefinger - pointing in the direction of magnetic field (to South)
Second finger - pointing in the direction of the current
Thumb - shows the direction of force acting on the current-carrying conductor

5. The magnitude of the current and the strength of the magnetic field affects the magnitude of force acting on the current-carrying conductor placed in a magnetic field. Greater current and stronger magnetic field increases the magnitude of force acting.

6. When the direction of the current and the magnetic field are parallel, the current-carrying conductor experienced zero force.

7. Moving coil loudspeaker apply the magnetic force phenomenon in producing sound.

8. For parallel current-carrying conductors;
(i) when the direction of the currents are the same, a force of attraction exerts on the conductors. (attracts and move closer to each other)
(ii) when the direction of the currents are opposite, a force of repulsion exerts on the conductors. (repels and move further from each other)

EXERCISES (Q&A) ON THIS CHAPTER;
https://drive.google.com/file/d/1TrMazwQM7q9BnNsSLupdyFOfa5kY4v_p/view?usp=sharing

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