5.4 magnets IB physics

Front

What is the shape of a magnetic field around a coil?

Back

The magnetic field around a coil is in the shape of concentric circles.

Front

What is the SI unit of magnetic field?

Back

The SI unit of magnetic field is the tesla (T).

Front

What does the right hand rule help determine?

Back

The right hand rule helps determine the direction of the magnetic force on a charged particle moving in a magnetic field.

Front

What is the direction of the magnetic force on a positive charge moving in a magnetic field?

Back

The direction of the magnetic force on a positive charge is given by the right hand rule, where the thumb points in the direction of velocity, the fingers in the direction of the magnetic field, and the palm indicates the force.

Front

What happens to the force on a charged particle if its velocity increases in a magnetic field?

Back

The force on a charged particle increases if its velocity increases, as the force is proportional to the velocity.

Front

What is the relationship between magnetic field strength (B), charge (Q), velocity (v), and force (F)?

Back

The magnetic force (F) on a charged particle is given by F = QvB sin(θ), where θ is the angle between the velocity and the magnetic field.

Front

What is the effect of a magnetic field on a stationary charged particle?

Back

A stationary charged particle experiences no magnetic force in a magnetic field.

Front

How does the direction of the magnetic field relate to the direction of current in a wire?

Back

The direction of the magnetic field around a current-carrying wire is determined by the right hand rule; if the thumb points in the direction of current, the fingers curl in the direction of the magnetic field.

Front

What is the force exerted on a magnet by a charged particle moving in its field?

Back

The force exerted on the magnet by the charged particle is equal in magnitude and opposite in direction to the force exerted by the magnet on the charged particle (Newton's third law).

Front

What is the significance of the tesla in magnetic fields?

Back

The tesla is a measure of the strength of a magnetic field, defined as one weber per square meter.