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Electricity and Magnetism
Electricity and magnetism are ultimately inextricably linked. Electricity is the term given to a group of physical phenomena involving electric charges, their motions, and their effects. Magnetism is the force generated by the passage of an electric current through matter.
3,116 Questions
Where will you use ampere circuital law in preference to biot savart law?
Ampere's circuital law is typically used to determine the magnetic field around symmetrically arranged current-carrying conductors or solenoids where the symmetry simplifies the calculation. On the other hand, the Biot-Savart law is employed for more general cases where the magnetic field needs to be calculated at any point in space due to a general current distribution. Ultimately, the choice between the two depends on the complexity of the current configuration and the ease of application of each method.
Does electricity travel faster through air or water?
Since ice is a solid, the molecules that make it up are a lot more closely packed then in water. Also, water is one of the few substances that grow in volume when frozen this may give the electrons in an electrical current more room to move through the solid object.
An electrolytic battery is a type of secondary battery that stores electrical energy through an electrochemical process. It contains an electrolyte solution that allows for the movement of ions between the battery's electrodes during charging and discharging cycles. Examples of electrolytic batteries include lithium-ion batteries and lead-acid batteries.
What is the power of a ciruit with 10 ohmns 10 volts and 2 amps?
Well, first of all, if the resistance of the circuit is 10 ohms and you connect 10 volts to it,
then the current is 1 Amp, not 2 . So either there's something else in your circuit that
you're not telling us about, or else the circuit simply doesn't exist.
-- If you connect some voltage to some resistance, then the resistance heats up and
dissipates (voltage)2/resistancewatts of power, and the power supply has to supply it.
-- If there is some current flowing through some resistance, then the resistance heats up and
dissipates (current)2 x (resistance)watts of power, and the power supply has to supply it.
-- If there's a circuit with some voltage connected to it and some current flowing
through it, then the resistance of the circuit is (voltage)/(current) ohms, the parts
in the circuit heat up and dissipate (voltage) x (current) watts of power, and
the power supply has to supply it.
There's no such thing as "the power of a circuit". The power supply supplies the
circuit with some amount of power, the circuit either dissipates or radiates some
amount of power, and the two amounts are equal.
What does S means in the name of Dr Adel S Sedra?
The "S" in Dr. Adel S. Sedra's name stands for Salahuddin.
How many pulses of current in one second?
1.8A is the current or I. the time is 1 second, or t. and you don't know the charge or Q. the formular is I=Q/t so you substitute the values into the equation. so 1.8=Q/1 then rearrange, so Q=1.8*1 so Q=1.8.
then you need to divide the charge by the charge of one electron which is
-1.6E-19(E is expotential so X10) so 1.8/-1.6E-19=-1.125E19 and the unit is mms-1 so the answer would be -1.125E19mms-1 i hope that is helpful =D
Why is there a positive and negative terminal in electical device?
there are positive and negative terminal in electrical device who operate on dc power supply because they wont work if the connection is reversed.
but devices who operate on ac usually dosenot have polarity marks .
What property of graphite makes it suitable for use as electrodes?
Graphite has high electrical conductivity due to its delocalized electrons, making it suitable for use as electrodes. Its layered structure also allows for easy movement of electrons within the material, enhancing its performance as an electrode.
What is the relevance of magnetism to electricity?
Magnetism relates to electricity because they both have to do with moving charge.
Also if you have a magnet you can produce a current through induction and if you have a current, there is a magnetic field surrounding the current. So magnetism and electricity are somewhat intertwined.
What is the broken path through which electricity passes?
A broken path through which electricity passes is called an open circuit. In an open circuit, the flow of electricity is interrupted, preventing the current from completing its path and causing devices not to work. It is important to repair open circuits to restore the flow of electricity.
Why the resistance is directly proportion to the lenght of a conductor?
Resistance is caused due to the collision of the moving free electrons in a conductor with the fixed positive ions in the metal when a potential difference is applied across the conductor. As the length increases, the number of collisions by the moving free electrons with the fixed positive ions increases as more number of fixed positive ions are present in an increased length of the conductor. As a result, resistance increases. -Sanjay
How fast does electricity travel through the best conductor?
In the best conductors, such as copper, electricity travels very quickly, close to the speed of light, which is approximately 186,000 miles per second in a vacuum. However, in practical conductors like wires, the speed at which electricity flows is much slower due to resistance and other factors.
What is said about the way light reflects from the mirror?
Light reflects off a mirror at the same angle it hits the mirror, according to the law of reflection. This means that the angle of incidence (incoming light) is equal to the angle of reflection (reflected light) with respect to the normal (perpendicular line) of the mirror surface.
What elements is a good conductor of heat and electricity Carbon Chlorine Neon or Silver?
Silver is the 2nd best conductor; behind gold and ahead of copper.
Why doesnt anything electrical in my car work?
Electrical issues in a car can be caused by a variety of reasons such as a blown fuse, a faulty battery, loose wiring, or a malfunctioning alternator. It is best to have a professional mechanic diagnose the problem to pinpoint the exact cause and provide a proper solution.
Can steel can attract with south pole magnet?
Yes, steel can be magnetized and will attract to a south pole magnet due to its ferromagnetic properties. When a steel material is in close proximity to a magnet, the magnetic domains within the steel align with the external magnetic field, leading to attraction between the two.
Is a brown electrical wire live?
In household wiring, brown insulation is typically used for live or hot wires. It is important to always verify with a voltage tester or consult a professional before working on any electrical wires to ensure safety.
Why does electricity move from you to a metal object after walking on carpet?
When you walk on carpet, you can build up a charge of static electricity. If you then touch a metal object, the charge will flow from you to the metal object because metals are good conductors of electricity. This transfer of charge is known as static discharge.
How do you connect a voltmeter in parallel circuit?
A voltmeter is used to measure potential difference across two points in an electrical circuit .
The voltmeter is connected in parallel across the circuit element (resistance ) so that its inclusion in the circuit has negligible effect on total resistance and current flowing in yhe circuit
A voltmeter has high resistance,if connected in series it will increase of circuit and reduce the current in the circuit
What is the fundamental carrier of electric charge?
The fundamental carrier of electric charge is the electron. The charge on one
electron is 1.6021765 × 10−19 Coulomb, and is negative. Charge can't exist
in any smaller quantity, and all charges are multiples of this quantity.
Protons have a positive charge of the same quantity, but they stay in their respective
nuclei and don't participate in the movement of charge from place to place.
Which property of solder makes it suitable for welding electrical wires?
Solder has a low melting point, typically around 370°F to 450°F, which allows it to flow easily and create a strong bond between the electrical wires without damaging them. Additionally, solder is a good conductor of electricity, ensuring a reliable electrical connection once it hardens.
Why is human body a bad conductor of electricity?
Answer
Technically the human body would fall into the 'poor conductor' category based
on it's basic resistance to electricity. It's on the order of a few K-ohms (1-2,000 ohms) to several MegOhms, depending on the current path.
A "good conductor", like a copper wire will typically exhibit less than 1/2 ohm.
That said, the human body does NOT respond well to being in the path of current. Few people survive lightning strikes because the voltage could approach a MILLION volts, and the current path is very likely across the chest cavity. Even with our bodies being a poor conductor, the strike is often fatal because of the current path across the heart, and localized tissue heating from the lightning, that lowers the body's internal resistance.
People who handle live voltages have special training and rules to follow to protect our lives. I've been accidentally zapped by 50,000 volts while repairing color TV sets, it felt like I was stabbed by a needle, and left a small black spot about that size on my finger. I survived because of my training, and the "one hand rule". Yet I still jump, and find static electricity discharges painful.
Another answer
The human body is actually a fairly good conductor of electricity, technically speaking. Remember that the body has a lot of water in it, and it also contains a lot of dissovled ions. These combine to make the body a fairly good conductor of electricity. Note, however, that dry skin has a fair amount of resistance to it, but under the dermal layers, the "wet" body will conduct pretty well.
A mega hat is a virtual hat accessory that players can wear on the online gaming platform Roblox. It is typically larger and more extravagant than regular hats and is often seen as a status symbol within the Roblox community.
What transfer of energy is by electromagnet waves?
Electromagnetic waves transfer energy through oscillating electric and magnetic fields. This transfer occurs through a vacuum because they do not require a medium for propagation. Examples of electromagnetic waves include light, radio waves, microwaves, and X-rays.
Who said that electric charge cannot be created or destroyed?
The principle that electric charge cannot be created or destroyed is a foundational concept in physics known as the conservation of charge. This principle was first introduced by British scientist Benjamin Franklin in the 18th century.
