Electricity and Magnetism - SA (S8P5b+c)

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It typically consists of a coil of wire wrapped around a core material, such as iron.

Front

How can the strength of an electromagnet be increased?

Back

The strength of an electromagnet can be increased by increasing the voltage (adding more batteries) and decreasing the distance between the wire coils.

Front

What happens to charges in a neutral object when it is charged by induction?

Back

When a neutral object is charged by induction, the charges within the object are rearranged, but no charge is transferred between the objects.

Front

What is the role of friction in static electricity?

Back

Friction can cause a transfer of electrons between two objects, leading to one object becoming positively charged and the other negatively charged.

Front

What is the primary factor responsible for charge distribution in conductors?

Back

Electron movement is the primary factor responsible for the distribution of charge in conductors.

Front

What occurs when a negatively charged object touches a neutral conductor?

Back

When a negatively charged object touches a neutral conductor, negative charges will transfer to the conductor and distribute evenly over its surface.

Front

What is static electricity?

Back

Static electricity is the accumulation of electric charge on the surface of objects, which can result from friction, induction, or conduction.

Front

What is the difference between conductors and insulators?

Back

Conductors allow electric charges to flow freely (e.g., metals), while insulators restrict the flow of electric charges (e.g., rubber, glass).

Front

What is induction in the context of electric charge?

Back

Induction is the process by which a charged object can cause a redistribution of charges in a nearby neutral object without direct contact.

Front

What is the effect of like charges on each other?

Back

Like charges repel each other, while opposite charges attract.