Torque on a Current Loop in a Magnetic Field
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Questions and Answers

What is the magnitude of the force acting on side 2?

FibB cos 0

Why do the forces F1 and F3 not move the loop up or down?

Because they have opposite directions

What is the orientation of the loop in the magnetic field?

Perpendicular

What is the net torque produced by forces F1 and F3?

<p>iabB sin 0</p> Signup and view all the answers

How can we find the direction of the normal vector?

<p>Use the right-hand rule</p> Signup and view all the answers

Why does the torque tend to align the normal vector of the loop with the magnetic field?

<p>Due to the net torque produced by F1 and F3</p> Signup and view all the answers

What does the normal vector represent?

<p>Orientation of the loop</p> Signup and view all the answers

What is the net force on the loop?

<p>Vector sum of forces on its four sides</p> Signup and view all the answers

What is the moment arm of the torque due to forces F1 and F3?

<p>(b/2) sin</p> Signup and view all the answers

How does increasing the number of loops in the coil affect the magnetic forces?

<p>Increases the overall force</p> Signup and view all the answers

How is the net torque calculated?

<p>By summing torques from each side</p> Signup and view all the answers

How can you find the direction of the normal vector using the right-hand rule?

<p>Curl fingers in direction of current, thumb points normal</p> Signup and view all the answers

What is the net force on a current-carrying coil in a uniform external magnetic field?

<p>Zero</p> Signup and view all the answers

What is the formula for the magnitude of the torque acting on a current-carrying coil in a magnetic field?

<p>$T = N i A B \sin \theta$</p> Signup and view all the answers

What type of forces are responsible for the work done by electric motors?

<p>Magnetic forces</p> Signup and view all the answers

In a simple motor, what consists of the single current-carrying loop immersed in a magnetic field?

<p>The motor</p> Signup and view all the answers

What does a rectangular loop of current in a magnetic field indicate?

<p>Magnetic forces on sides</p> Signup and view all the answers

What are the key factors in the relationship between torque magnitude and a current-carrying coil in a magnetic field?

<p>Number of turns, Area, Current, Field magnitude, Angle</p> Signup and view all the answers

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