RHR: Used to find the force on a charge or wire in a magnetic field. | RHCR: Used to find the direction of the magnetic field created by a current-carrying wire.

Parallel Currents: Wires attract each other. | Anti-Parallel Currents: Wires repel each other.

N: number of turns in the loop, I: current in the loop, A: area of the loop, B: magnetic field strength, θ: angle between the normal to the loop and the magnetic field.

Thumb: Direction of the current (I), Fingers: Direction of the magnetic field (B), Palm: Direction of the force (F).

1. Point your thumb in the direction of the current (I). 2. Point your fingers in the direction of the magnetic field (B). 3. Your palm will point in the direction of the force (F).

1. Point your thumb in the direction of the current (I). 2. Curl your fingers; they will curl in the direction of the magnetic field (B).

1. Use RHCR to find the magnetic field created by wire 1 at the location of wire 2. 2. Use RHR to find the force on wire 2 due to the magnetic field from wire 1. 3. Determine if the force is attractive (parallel currents) or repulsive (anti-parallel currents).

1. Determine the area (A) of the loop. 2. Find the angle ($\theta$) between the normal to the loop and the magnetic field. 3. Calculate the torque using the formula $\tau = NIAB \sin(\theta)$.

1. For straight sections, use $F = ILB\sin(\theta)$ and the RHR. 2. For curved sections, consider symmetry to simplify. 3. Integrate or sum the forces on small segments if necessary.