State the magnetic dipole moment magnitude for an \(N\)-turn current loop.

State the torque magnitude on a current loop in a uniform magnetic field.

What is the direction of a current loop's magnetic moment?

A \(20\)-turn coil has area \(3.0\times10^{-3}\,\mathrm{m^2}\) and current \(0.50\,\mathrm{A}\). Find \(\mu\).

A coil has \(N=50\), \(I=0.40\,\mathrm{A}\), \(A=2.0\times10^{-3}\,\mathrm{m^2}\), and \(B=0.30\,\mathrm{T}\). Find maximum torque.

When is the torque on a current loop maximum?

When is the torque on a current loop zero?

A coil with \(\mu=0.080\,\mathrm{A\,m^2}\) is in \(0.50\,\mathrm{T}\) at \(30^\circ\) to the field. Find the torque.

State the vector torque law for a magnetic dipole in a magnetic field.

State the potential energy of a magnetic dipole in a magnetic field.

Which orientation of a current loop in a magnetic field is stable?

Which orientation of a current loop in a magnetic field is unstable?

A coil has maximum torque \(0.060\,\mathrm{N\,m}\) in \(0.20\,\mathrm{T}\). Find its magnetic moment.

A \(100\)-turn coil with current \(0.20\,\mathrm{A}\) must have \(\mu=0.50\,\mathrm{A\,m^2}\). Find the area per turn.

Why can a current loop have zero net force but nonzero torque in a uniform field?

If the current in a loop is doubled, what happens to its maximum torque?

If the number of turns and the current are both doubled, what happens to maximum torque?

A dipole with \(\mu=0.10\,\mathrm{A\,m^2}\) rotates from perpendicular to parallel with a \(0.40\,\mathrm{T}\) field. Find the change in potential energy.

A loop has \(\vec\mu\) along \(+x\) and \(\vec B\) along \(+z\). What is the torque direction?

Explain how the torque equation \(\tau=NIAB\sin\theta\) connects wire forces to magnetic dipole alignment.