Magnetic Fields and Current-Carrying Wires Quiz

What was the significance of the 19th-century experiment involving a current-carrying wire?

• It proved that electricity can be stored in magnets.

• It demonstrated the relationship between electricity and magnetism.

• It showed that magnetism can be converted into electricity.

• It revealed that magnetic fields are only present in permanent magnets.

How are the magnetic field lines oriented around a current-carrying wire?

• They create concentric circles around the wire.

• They form a spiral pattern along the wire.

• They form parallel lines along the wire.

• They are random and have no specific pattern.

What does the arrow notation in 3D visualization represent?

• The direction into or out of the screen.

• The strength of the magnetic field.

• The direction of the magnetic field.

• The speed of the current.

According to the right-hand grip rule, what happens when the current flows into the screen?

• The magnetic field lines are clockwise.

• The magnetic field lines are anti-clockwise.

• The magnetic field lines are parallel to the wire.

• The magnetic field lines disappear.

What is the direction of the magnetic field when the current flows out of the screen?

• Clockwise

• Perpendicular to the wire

• Anti-clockwise

• Parallel to the wire

How can the right-hand grip rule be used to determine the direction of magnetic field lines?

• Align the thumb with the electron flow.

• Align the thumb with the direction of the conventional current.

• Align the thumb with the magnetic field lines.

• Align the thumb with the direction of the magnetic force.

What is a solenoid?

• A wire with a magnetic coating.

• A loop of wire, often with multiple turns.

• A straight wire with no loops.

• A single loop of wire.

What is the characteristic of the magnetic field inside a solenoid?

• It is random and unpredictable.

• It is only present at the edges.

• It is uniform and strong.

• It is non-uniform and weak.

How does a solenoid behave when a current passes through it?

• It loses its magnetic properties.

• It acts as if it has a north and south pole.

• It generates no magnetic field.

• It acts like a permanent magnet.

What is one application of a solenoid in engineering?

• To create a uniform magnetic field.

• To convert magnetism into electricity.

• To measure the speed of light.

• To store electrical energy.