Light Bulbs, Batteries, & Circuits

How many volts in lightning?

1 billion volts

How many volts in a D Battery?

1.5 volts

How many volts in a Wall electrical socket

110 or 240 volts

How many volts in a Car Battery

12.6 volts

How do a battery, light bulb and wire have to be configured to light a light bulb.

positive and negative connections

Characteristics of Incandescent Light bulbs

simple, oldest, last only a year, filament is tungsten

Characteristics of a fluorescent bulb?

A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.

Definition of electricity?

A form of energy resulting from the existence of charged particles (such as electrons or protons), either statically as an accumulation of charge or dynamically as a current.

what are insulators

An electrical insulator is a material whose internal electric charges do not flow freely

What is an insulator and a conductor?

Conductors and Insulators. In a conductor, electric current can flow freely, in an insulator it cannot. ... "Conductor" implies that the outer electrons of the atoms are loosely bound and free to move through the material. Most atoms hold on to their electrons tightly and are insulators.

What is voltage?

Electrical pressure

Characteristics of LED bulbs

LED - Light Emitting Diode - Low Power Consumption. - Small Size. - Fast Switching. - Physically Robust. - Long Lasting.

Examples of circuits and which ones will light a bulb and which will not?

When a light bulb connects to an electrical power supply, an electrical current flows from one metal contact to the other. As the current travels through the wires and the filament, the filament heats up to the point where it begins to emit photons, which are small packets of visible light.

Characteristics of halogen bulbs

The halogen light bulb or lamp is a type of incandescent lamp which uses a halogengas in order to increase both light output and rated life.

How does a switch work?

When a switch is off, it creates a gap in the circuit so that electrons cannot flow throughout the circuit.

What is current?

The rate of flow of charge

What is the filament made of?

Tungsten

How is a circuit tester used to determine wiring?

Use the two-lead circuit tester to check for voltage. Place one lead on a live/hot wire(usually black, but can be any color other than green or white) and the other on a neutral (white) or ground (green or copper) wire, and the tester's light will turn on. This confirms that you have a good, complete circuit.

What is a switch?

a device that can interrupt the electrical flow in a circuit

Definition of a short circuit? How is one created?

a failure in an electrical circuit when the current takes a short cut. By crossing wires

Definition of a Circuit?

a path for electrical current to follow

What are conductors

conductor, electric current can flow freely

What do light bulbs give off besides light?

heat