Understanding the Motor Effect

The video tutorial explains the motor effect, where a current-carrying wire in a magnetic field experiences a force. It covers how to determine the direction and strength of this force using Fleming's left-hand rule and the equation F = BIL. The video also demonstrates the motor effect in a horseshoe magnet setup and provides a practical example of calculating force strength.

What happens to a current-carrying wire placed in a magnetic field?

• It becomes a magnet.

• It loses its current.

• It generates heat.

• It experiences a force.

What angle between the wire and the magnetic field results in the maximum force?

• 180 degrees

• 90 degrees

• 45 degrees

• 0 degrees

Which rule helps determine the direction of the force on a wire in a magnetic field?

• Fleming's right-hand rule

• Fleming's left-hand rule

• Ampere's rule

• Faraday's law

In Fleming's left-hand rule, what does the first finger represent?

• Direction of the wire

• Direction of the magnetic field

• Direction of the force

• Direction of the current

In a horseshoe magnet setup, what is the role of the free-to-roll rail?

• It allows current to flow.

• It supports the magnets.

• It generates the magnetic field.

• It experiences the force.

What direction does the force act in a horseshoe magnet setup when using Fleming's left-hand rule?

• Upwards

• Downwards

• To the right

• To the left

What is the formula used to calculate the force on a wire in a magnetic field?

• F = BIL

• F = BIR

• F = BIR^2

• F = BIL^2

In the formula F = BIL, what does 'B' represent?

• Force

• Length of the wire

• Current

• Magnetic field strength

If a wire is 0.1 meters long, carrying a 5 amp current in a 0.4 tesla magnetic field, what force does it experience?

• 0.1 newtons

• 0.4 newtons

• 0.2 newtons

• 0.3 newtons

What unit is used to measure magnetic flux density?

• Newtons

• Amperes

• Meters

• Teslas