Table of Contents
What could be used as a resistor in a circuit?
Ohm’s Law explains that the voltage difference in an electrical circuit is the product of the electrical current value (in Amperes) multiplied by the circuit resistance value (in Ohms). Because of this, even a good electrical conductor, such as metal wire, can be used as a resistor.
What does an eraser do in a circuit?
Circuit Eraser: The Circuit Eraser is a marker containing a solution that erases the AgIC ink. The eraser works a lot like erasers for pencils.
What objects can be used as resistors?
Resistor Materials
- Wirewound (WW)
- Carbon Composition (CCR)
- Carbon Film.
- Metal Film.
- Metal Oxide Film.
- Foil.
Can electricity travel through an eraser?
Rubber, plastic, glass, and wood are all good insulators since electricity does not travel through them easily.
Is rubber a resistor?
Yes there is. It normally changes its resistance on compression rather than tension, though there may be tension operated versions, and it uses quantum tunnelling.
Is rubber good conductor of electricity?
Metals are generally very good conductors, meaning they let current flow easily. Materials that do not let current flow easily are called insulators. Most nonmetal materials such as plastic, wood and rubber are insulators. Electricity requires a complete “loop” for current to flow.
Can a light bulb be used as a resistor?
The reason a light bulb glows is that electricity is forced through tungsten, which is a resistor.
How does a rubber eraser work?
A rubber eraser works similarly to a gum eraser but with a little more precision. It pulls graphite from the paper while shedding itself, so it will leave little “crumbs” on the paper.
What are pencil erasers and how do they work?
Pencil erasers are quite handy if you do very detailed and careful drawings. These come as 2 types – either encased in wood like a pencil which can be sharpened just like a pencil, or as one of those pencils where you pull a string that unwraps the paper covering (just like china markers).
What type of Eraser is best for charcoal drawings?
This type of rubber is the best choice for erasing highlights in charcoal or pastel because plastic and rubber erasers leave pieces that can smear the drawing when you rub them away, but a putty rubber collects the charcoal or pastel inside itself without leaving any crumbs to brush away.
How does a kneaded eraser work?
It works by picking up pigment off of the paper, and doesn’t leave “crumbs” like a gum or rubber eraser. It can be re-kneaded to absorb graphite. Since kneaded erasers can be shaped into a point, they can be used to erase areas of very fine detail.