Electric Circuits and Electromagnets Quiz

A complete circuit where current flows.

An incomplete circuit where no current flows.

A visual representation of an electrical circuit.

A part of an electrical circuit like a light bulb.

The flow of electric charge in a circuit.

A wire carrying current acts like a magnet.

A temporary magnet made by putting current through a coil of wire around a piece of iron.

Scientist credited with discovering the magnetic effects of current.

The area around a current-carrying wire where magnetic force can be felt.

Electromagnets are used to separate magnetic materials from non-magnetic materials, like in recycling plants.

Doctors use tiny electromagnets to remove small pieces of magnetic material that have accidentally entered the eye.

Electromagnets can be made very strong and can lift heavy loads, like in cranes.

An electric bell uses an electromagnet to strike a bell when electric current flows through it.

An electric bell consists of a power source, an electromagnet, a bell, a switch, and a hammer.

A device that automatically interrupts an electrical circuit to prevent damage caused by excessive current flow.

More electrical current than a circuit can handle safely, leading to overheating and potential damage.

It uses materials that melt or break when high currents pass through them, interrupting the circuit.

A crucial safety device that prevents fires and electrical shocks by stopping dangerous current levels.

If the current exceeds the safe limit, the circuit breaker may melt or break, potentially causing fire hazards.

When electric current flows through a wire coil wrapped around an iron core, the core becomes magnetic. When the current stops, the magnetism disappears.

When electric current flows through a wire, it generates heat. This is because the electrons carrying the current collide with atoms in the wire, transferring energy.

The amount of heat produced depends on the material, length, and thickness of the wire. Thicker wires heat less easily, longer wires heat more easily and different materials conduct heat differently.

A coil of wire in heating appliances that becomes red-hot and produces heat when electric current flows through it.

LED bulbs use significantly less electricity compared to traditional bulbs, making them more energy efficient.

Compact Fluorescent Lamps (CFLs) contain mercury, a toxic substance that requires careful disposal.

A compass needle placed near a current-carrying wire deflects due to the magnetic field created by the current.

Electromagnets cannot attract plastic bags because plastic is not a magnetic material.

An electromagnet is created when an electric current flows through a coil of wire, generating a magnetic field that can be used for various purposes.