Torque in uniform magnetic field

Click For Summary
A rectangular coil placed in a uniform magnetic field experiences torque due to the interaction between the magnetic field and the electric current flowing through the coil. Torque arises because the magnetic force acts on the sides of the coil, creating a rotational effect. The coil will indeed rotate in the magnetic field as long as the current is present, aligning itself with the field lines. This rotation occurs because the forces on opposite sides of the coil are unequal, resulting in a net torque. Understanding this principle is crucial for applications like electric motors and generators.
Deebu R
Messages
67
Reaction score
0
how can a rectangular coil placed in uniform magnetic field have torque? Isn't torque the force on an object while its rotating? Will the coil rotate in a magnetic field? I don't understand.
 
Physics news on Phys.org
ie. if the coil has an electric current going through it.
 

Thread 'What determines if wave components are independent vs coherent?'

I'm working through something and want to make sure I understand the physics. In a system with three wave components at 120° phase separation, the total energy calculation depends on how we treat them: If coherent (add amplitudes first, then square): E = (A₁ + A₂ + A₃)² = 0 If independent (square each, then add): E = A₁² + A₂² + A₃² = 3/2 = constant In three-phase electrical systems, we treat the phases as independent — total power is sum of individual powers. In light interference...
View full post »

Similar threads

Undergrad Magnetic dipole and a torque
  • · Replies 1 ·
Replies
1
Views
890
Undergrad Circular loop in uniform magnetic field
  • · Replies 11 ·
Replies
11
Views
2K
Undergrad Is This Correct Description of Magnetic Saturation?
  • · Replies 14 ·
Replies
14
Views
2K
Undergrad Charge movement relative to magnetic field frame dependence/invariance
  • · Replies 5 ·
Replies
5
Views
1K
Undergrad How induction works within a coil (nuances of it)
  • · Replies 6 ·
Replies
6
Views
2K
High School Magnetic field and generator power output
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Motional EMF in Faraday disc, co-rotating magnet axial mean flux
  • · Replies 5 ·
Replies
5
Views
528
High School Antenna induction, oscillating circuit generating EM Waves
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Hall effect -- is it always applicable?
  • · Replies 7 ·
Replies
7
Views
2K
High School Why Does My Toaster Hum Due to AC-Induced Magnetic Forces?
  • · Replies 22 ·
Replies
22
Views
2K