6.4 The Magnetic Field of a Solenoid

Front

What happens to the strength of an electromagnet when more coils are wrapped around it?

Back

The electromagnet becomes stronger.

Front

In a solenoid, if the current is flowing towards the observer on the side closest to them, which direction is it flowing?

Back

Right.

Front

If the current is going up on the front side of a coil, which side of the electromagnet is designated as north?

Back

Left.

Front

What occurs to the induced magnetic field in a solenoid if the current is decreased?

Back

The induced magnetic field is weaker and its direction stays the same.

Front

What effect do paramagnetic materials have on the magnetic field strength when placed in a solenoid?

Back

Paramagnetic materials increase the magnetic field strength by a bit.

Front

Define a solenoid.

Back

A solenoid is a coil of wire that generates a magnetic field when an electric current passes through it.

Front

What is the relationship between the number of coils in a solenoid and the strength of the magnetic field?

Back

More coils result in a stronger magnetic field.

Front

Explain the right-hand rule in the context of solenoids.

Back

The right-hand rule states that if you curl the fingers of your right hand in the direction of the current flow through the coils, your thumb points in the direction of the magnetic field.

Front

What is the role of current in generating a magnetic field in a solenoid?

Back

The flow of electric current through the coils creates a magnetic field around the solenoid.

Front

What is the effect of reversing the current direction in a solenoid?

Back

Reversing the current direction reverses the direction of the magnetic field.