Magnetism
Magnetic forces on moving charges and on currents, and the fields that wires produce.
Problems
- Field Along z
- An Electron Circling in a Field
- A Smaller Force
- Which Ion Turns Tightest?
- Selecting a Speed
- Period of the Spiral
- Radius in Numbers
- Radius of the Circle
- Force on a Moving Charge
- Force on a Moving Charge
- Moving Against the Current
- An Electron Instead
- Which Ion Turns Widest?
- Radius of the Spiral
- Double the Radius
- An Electron in the Same Field
- An Electron in Crossed Fields
- A Proton Through the Same Fields
- Force on a Charge Beside a Wire
- At 30° to the Field
- Twice as Fast
- Period in Numbers
- Heading Toward the Wire
- Pitch of a Helix
- Radius of Its Circle
- Moving Along the Field
- Same Energy Instead of Same Speed
- Moving Along the Field
- An Electron That Is Too Fast
- A Simple Perpendicular Wire
- Bring Them Closer
- Double Everything
- Force on a Wire Between Magnet Poles
- Which Way Is the Right Wire Pushed?
- A Wire at 30° to the Field
- Force on One Side in Numbers
- Net Force on the Whole Loop
- Forces on Two Sides of a Loop
- Opposite Currents
- Parallel to the Field
- Force per Metre
- A Wire at 60°
- Force on the Left Side
- Midway Between Two Equal Currents
- Reverse the Current
- Unequal Currents
- Where Is the Field Zero?
- Field from the Vertical Wire
- Without Wire C
- Reverse the 50 A Current
- Opposite Currents at the Midpoint
- Two Perpendicular Wires
- Rod Below the Plane
- Which Way Does the Compass Point?
- A Rod Along the y-Axis
- Where Do They Cancel?
- Field at Q from Three Wires
- Reversing Wire C
- A Zero Point Outside