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  2. AP Physics 2 Revised
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What is the effect of breaking a bar magnet in half?

You get two smaller bar magnets, each with its own north and south pole.

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What is the effect of breaking a bar magnet in half?

You get two smaller bar magnets, each with its own north and south pole.

What happens when like poles of magnets are brought together?

They repel each other.

What happens when opposite poles of magnets are brought together?

They attract each other.

What is the effect of an external magnetic field on a magnetic compass?

The compass aligns itself with the external magnetic field.

What is the effect of temperature on the permeability of a material?

Permeability can change with temperature.

What is the effect of increasing the density of magnetic field lines?

The strength of the magnetic field increases.

Steps to determine the direction of magnetic force on a positive charge using the right-hand rule?

  1. Point thumb in the direction of the velocity. 2. Point fingers in the direction of the magnetic field. 3. Palm points in the direction of the force.

Steps to determine the magnetic field direction around a current-carrying wire using the right-hand rule?

  1. Wrap your fingers around the wire in the direction of the current. 2. Your thumb points in the direction of the magnetic field.

Steps to apply Ampère's Law to find the magnetic field?

  1. Choose an Amperian loop. 2. Calculate the line integral of B around the loop. 3. Determine the current enclosed by the loop. 4. Apply Ampère's Law: ∮B⋅dl=μ0Ienc\oint B \cdot dl = \mu_0 I_{enc}∮B⋅dl=μ0​Ienc​.

Define magnetic force (F).

The force experienced by a charged particle moving in a magnetic field, measured in Newtons (N).

What is magnetic field strength (B)?

A measure of the intensity of a magnetic field, measured in Tesla (T).

What is the permeability of free space (μ0\mu_0μ0​)?

A physical constant representing the ability of a vacuum to support the formation of a magnetic field. μ0=4π×10−7\mu_0 = 4\pi \times 10^{-7}μ0​=4π×10−7 T⋅m/A.

Define Ampère's Law.

The line integral of the magnetic field around a closed loop is proportional to the current enclosed by the loop.

Define Biot-Savart Law.

Law that calculates the magnetic field created by a small segment of current-carrying wire.

Define Cyclotron motion.

The circular motion of a charged particle in a uniform magnetic field.