Electric Current and Circuits

False (B)

Collisions of electrons with immobile ions in the wire.

<p>fuse</p> Signup and view all the answers

<p>Series connection = Components connected end-to-end in a single path Parallel connection = Components connected with starting and ending points together Heating element = Device that uses thermal energy to function Electric fuse = Safety device that breaks circuit upon excessive current</p> Signup and view all the answers

<p>A battery (C)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Components are connected end-to-end forming a single path.</p> Signup and view all the answers

<p>To automatically break the circuit if excessive current flows (C)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>Hans Christian Oersted</p> Signup and view all the answers

<p>iron core</p> Signup and view all the answers

<p>Gong = Creates sound when struck Hammer = Strikes the gong Soft Iron Bar = Serves as the electromagnet Circuit = Includes battery, switch, and wiring</p> Signup and view all the answers

<p>Increasing the current flowing through the wire (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>The hammer strikes the gong.</p> Signup and view all the answers

<p>electromagnets</p> Signup and view all the answers

<p>More turns increase the strength (B)</p> Signup and view all the answers

An electric circuit is a complete path that allows electric current to flow.

A closed circuit is a complete path where electric current can flow from the positive terminal to the negative terminal.

An open circuit is an incomplete path where electric current cannot flow.

Components connected end-to-end in a single path

Components connected with their starting and ending points connected together.

The heating effect of electric current happens when electrical energy is converted into thermal energy.

An electric fuse is a safety device that prevents damage to electrical circuits and appliances in case of excessive current flow.

Fuse wires are designed to melt and break the circuit when current exceeds a specific limit.

The flow of electric current through a wire creates a magnetic field around it.

A temporary magnet created by passing an electric current through a coil of wire wrapped around an iron core. It works only when the electric current flows.

You can create an electromagnet by winding insulated wire around an iron nail and connecting it to a battery with a switch. When the switch is closed, the nail becomes a magnet.

Increasing the current flowing through an electromagnet increases its strength. Increasing the number of turns in the wire coil around the electromagnet also increases its strength.

Every magnet has a North Pole and a South Pole. Electromagnets also have these poles.

Trains that float in the air using electromagnets for levitation, allowing for very high speeds.

A device where electromagnets play a key role. When an electric current flows, the electromagnet attracts a hammer, striking a gong and producing sound.

The component of an electric bell that attracts the hammer, causing it to strike the gong. It is a temporary magnet activated by electric current.

An experiment using four electromagnets with different numbers of turns. The electromagnet with the most turns will attract the most iron pins, demonstrating that more turns mean more magnetic strength.

A safety device that automatically breaks the circuit if the current exceeds a specific limit. They are used to protect electrical circuits from overloading and short circuiting.