Electromagnetism

Magnetic field lines should NEVER be __________.

• pointing from North to South

• crossing each other

• symmetrical

• close together

The diagram shows the application of __________.

• Fleming's Left-Hand Rule

• Fleming's Right-Hand Rule

• Left-Hand Grip Rule

• Right-Hand Grip Rule

When using the Right-Hand Grip Rule for an iron bar placed in a d.c. solenoid, the thumb represents the _____.

• North pole

• motion

• current direction

• magnetic field direction

When using the Right-Hand Grip Rule around a current-carrying wire, the thumb represents the _____.

• North pole

• motion

• current direction

• magnetic field direction

The diagram shows a magnetic field around a current flowing out of this screen. The _____ has been drawn WRONGLY.

• current direction

• magnetic field direction

• distance between field lines

• symbol for the current

The compasses will all point _____ when an downward current flows in the wire.

• clockwise

• anticlockwise

• left

• right

The diagram shows that __________.

• like currents attract

• like currents repel

• unlike currents attract

• unlike currents repel

The proton enters the magnetic field and moves __________.

• up in a straight path

• down in a straight path

• up in a curved path

• down in a curved path

When applying the Fleming's Left-Hand Rule, X represents the _____.

• North pole

• current direction

• magnetic field direction

• magnetic force direction

When applying the Fleming's Left-Hand Rule, Y represents the _____.

• North pole

• current direction

• magnetic field direction

• magnetic force direction