Terminology and units
Current is a flow of electrical charge carriers, usually electrons or electron-deficient atoms. The common symbol for current is the uppercase letter I.
The potential difference between two points.The units for potential difference are Joules per coulomb, or volts. (1 volt = 1 Joule/coulomb).
Electric charge is carried by the electrons ( negative charge) and protons (positive charge) within an atom. The…
Wheatstone bridge is a device used to measure unknown resistance by passing current through the resistor . Wheatstone bridge is made up of a power source and galvanometer that joins the two-parallel circuits which contains two resistors each. It is very useful in finding small resistances and is used in various applications such as strain gages. The following figure shows the arrangement of a Wheatstone bridge.
Figure 1: Arrangement of a Wheatstone Bridge 
Importance of Wheatstone…
A sensor is a device that receives a stimulus, meaurand, or any input signal such as from heat, pressure, light, motion and many more, and responds with an electrical signal. This electrical signal then will decide what will be the result of an output. Depending on the input of the stimulus, the sensor will react to it in a particular way. Sensors are attached to an electrical device and they scan the surrounding environment. Then it converts the input signals to a voltage, current or charge.…
Ohm’s law is the basic rule of the electricity that explains the relationship between electric current, voltage, and resistance. The ohm’s law was named after the German physicist Georg Ohm who discovered this rule or law.
Ohm’s law statement
Ohm’s law states that the electric current flowing through a conductor is directly proportional to the voltage and inversely proportional to the resistance. In other words, the electric current flowing through the conductor increases with increase in…
nexploded ordnance presents problems to workers and the general public as these explosive devices have been left behind from world wars and other conflicts. Over time these devices have been overlain by sediment at which point they have been buried to where they pose certain dangers to the public, and workers that are contracted for infrastructure projects. There is estimated to be around 15 million acres in unexploded ordnance in the U.S. alone. Geophysicists use Magnetics in order to locate…
CHAPTER II. REVIEW OF THE RELATED LITERATURE
A. Temporary Magnet
Temporary magnets are those that essentially demonstration like permanent magnets when they are inside a strong magnetic field (Jezek, 2015). They are not like permanent magnets when it's not around in a magnetic field because it loses its own magnetism. Temporary magnets cannot remain magnetized on their own (Boyer 2017). Paperclips, press nails, and other comparative things are cases of temporary magnets. Temporary magnets are…
The Great Electro Magnet Race is designed to teach Ms. Rayburn’s fourth grade class about electromagnets and magnetism. The main point for the students to learn will be that certain metals possess an electromagnetic force and can attract other types of metals by their electromagnetic field. Teaching the students about how electromagnets work and what magnetism will surely get them more interested in STEM education. The children need to understand more about engineering design as well as creative…
Design and implementation of an Electronic system for identification of rebars in reinforced concrete.
Abstract- In this paper non-destructive method is implemented in which magnetic self-designed sensor is used to detect position of rebar in reinforced concrete. During the renovation of old buildings it is necessary to locate rebar accurately to avoid damages in construction. This is achieved by Magnetic sensor which is made up of E-shaped core also primary and secondary windings. Due to…
Magnetic field strengths
My science project is about homemade electromagnetic magnets and permanent
magnets strength on heat and cold temperatures. I'm going to accomplish this by
making three sets of electromagnets and permanent magnets in hot temperature,
room temperature and cold temperatures to see how would they be affected by the
different temperatures its put in. But the dependent variable is on the…
a) According to the right-hand rule, the direction of the magnetic fields of the 3 wires are shown:
We find the magnetic fields B1, B2 and B3:
퐵1=퐵2= 푢0 푖 = 푢0 푖 = 4∗3.14×10−7 ∗(3.65) =ퟒퟐ.ퟔퟔퟎ풖푻 2휋푟 2휋( 2푎) 2 ∗ 3.14 ∗( 2(0.0121))
퐵3= 푢0 푖 = 푢0 푖 = 4∗3.14×10−7 ∗(3.65) =ퟐퟎ.ퟏퟏퟎ풖푻 2휋푟 2휋(3푎) 2 ∗ 3.14 ∗(3∗(0.0121))
The x components of the B1 and B2 cancel each other; therefore the net magnetic field will be downward and we have (the negative sign is because the direction is downward):
퐵=− 퐵1cos 45 +…