- #1
Physicslearner500039
- 124
- 6
- TL;DR Summary
- Understanding the difference of magnetic force
I am confused with the concept of Torque handled differently in books,
Concept1: If a loop is placed in a magnetic field and the current flowing in the loop is ##I## there will be force and torque acting on the loop given by ##F = I \vec l \times \vec B ##. The torque is given by ##\tau =\vec \mu \times \vec B ##.
Concept2: If a current flows through the loop then it becomes an electromagnet and a North and South pole are developed and if another magnetic field is present then there will be another North and South pole. The similar poles repel each other and a torque is produced.
Are the two concepts same? Why there is no mention of electromagnet in the concept1? Please advise.
Concept1: If a loop is placed in a magnetic field and the current flowing in the loop is ##I## there will be force and torque acting on the loop given by ##F = I \vec l \times \vec B ##. The torque is given by ##\tau =\vec \mu \times \vec B ##.
Concept2: If a current flows through the loop then it becomes an electromagnet and a North and South pole are developed and if another magnetic field is present then there will be another North and South pole. The similar poles repel each other and a torque is produced.
Are the two concepts same? Why there is no mention of electromagnet in the concept1? Please advise.