Electromagnetism and Magnetic Forces Quiz

Which device can you use to find the direction of a magnetic field?

With electromagnetism the direction of the current depends on which of the following?

If a current travelling along a wire changes direction, does the magnetic field also change direction?

This diagram shows the direction of a magnetic field caused by a current flowing through a conductor. Where is the magnetic field strongest?

A coil of wire with current flowing through it is an electromagnet. What else do we call a coil of wire?

The diagram shows a solenoid. Why is the magnetic field stronger along the centre of the coil than on the outside?

Which of the following are ways that a magnetic field of an electromagnet can be made stronger?

A current carrying conductor placed near a magnet experiences a force. The magnet also experiences a force, which is the best description of this force?

Why would a wire carrying a current experience a force near a magnetic field?

This image shows Flemming’s Left Hand Rule. Which of the following answers are the correct interpretations of the rule?

A wire carrying current experiences a force near a magnetic field. The size of the force is dependent on which three quantities?

The force on a conductor carrying current at right angles to a magnetic field is expressed by which of the following equations?

What is the force acting on a conductor carrying current at right angles to a magnetic field when: magnetic flux density = 0.005 T , current = 3 A and length of wire = 150m?