This quiz will help you consolidate your learning on the motor effect and Fleming's left hand rule.

Which way do we consider 'conventional current' to flow?

Which way do the magnetic flux lines in a magnetic field point?

What angle should be between the direction of current and the direction of the magnetic field for the force that is exerted on a wire to be a maximum?

What is true about the direction of the force exerted on a wire placed in a magnetic field when a current flows in the wire.

Which of the following changes would not make the motor effect force stronger?

Which hand is used to predict the direction of the force from the motor effect?

Match up "Magnetic Field (B)" with the finger that shows it on Fleming's Left Hand Rule.

Which way will the force act here?

Motor Effect and Left Hand Rule

This quiz will help you consolidate your learning on the motor effect equation F = B × I × l

What unit is force measured in?

What unit is magnetic flux density measured in?

What unit is length measured in?

What unit is current measured in?

A 0.4 m wire with 2 A flowing in it passes through a magnetic field with a magnetic flux density of 0.5 T.  What force ix exerted on the wire?

How do you convert 34 mm to metres?

How do you convert 650 nT to Teslas?

How do you convert 265 µA to Amps?

How do you convert 23.2 km to metres?

How do you convert 65 GA to amps?

A straight wire 0.10 m long carrying a current of 2.0 A is at right angles to a magnetic field. The force on the wire is 0.04 N. What is the strength of the magnetic field?

A wire that is 470 mm long hangs at right angles to a magnetic field of 1,800 μT and experiences a force of 9.5 mN. Calculate the current flowing in the wire. (2 s.f)

F = B × I × L (HT only)

Use the equation linking force, magnetic flux density, current and length to calculate any value, changing units where appropriate

Combine equations to calculate missing values

In this lesson we learn how to apply the equation to calculate the size of the force due to the motor effect and apply it to a range of situations.

Physics

Y10 Physics

Key Stage 4

Year 10

Match up "Current (l)" with the finger that shows it on Fleming's Left Hand Rule.

F = B x I x l

Magnetism

UNIT

Magnetic fields

Electromagnetism

The motor effect and left hand rule

DC Motors

Electromagnetic induction and generators

Electromagnetic devices

Transformers

Transformer equations

Case Study: Nikola Tesla

Magnetism Revision (Part 1)

Magnetism Revision (Part 2)

What are the names of the magnetic poles?

What is the piece of equipment needed to plot the magnetic field of a magnet?

Which way do the arrows on a magnetic field diagram always point?

In a diagram of a magnetic field, what shows that the field is stronger?

Why does the Earth have a magnetic field?

Some students were asked to draw out the shape of a magnetic field around a bar magnet.  Which student got their drawing completely correct?

HT only : Calculate the magnetic flux density when a force of 5N is exerted on a 0.25m wire carrying a current of 2A.    Use the equation F = B × I × L

Which sentence below describes electromagnetic induction?

Which of the following will increase the size of the induced potential difference

A transformer has a primary voltage of 12 V and a primary current of 2 A. If the secondary voltage is 24 V, what will the secondary current be?

A transformer with 1000 turns on the primary coil and 3000 turns on the secondary coil needs to produce an output current of 4.8 A.  What will the input current be?

Which of these statements best describes, using correct scientific terminology, the generator effect, also known as electromagnetic induction.

F = B x I x l

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