Electronics Engineering

To calculate the voltage across a 600-ohm resistor, you also need to know the current passing through it. Using Ohm's Law (V = I * R), where V is the voltage, I is the current, and R is the resistance, you can determine the voltage.

High resistivity is the inverse of conductivity, and Carbon is not a good conductor (although it could be a better conductor than most hydrocarbons). Here are a few examples:

Carbon - 0.07 x 106 S cm-1 (not a good conductor)

Silicon - 1.2 x 10-5 S cm-1 (not a good conductor - used for this purpose in microchips)

Copper - 59.6 × 106 S cm-1 (good conductor)

Atoms in metals (good conductors) are held together by bonds between nuclei and their electrons. Atoms in nonmetals (bad conductors) are held together due to the atmos' sharing of valence electrons (ie covalent bonds).

Conductivity has to do with how easily electrons can move. In metals, electrons are more free to move than nonmetals, resulting in better conductivity. Silver is the best conductor, I believe. Sorry for the run around, but the basic answer to your question is this: I suspect in hydrocarbons, the valence electrons are more restricted due to the covalent bonding to the hydrogen atoms.

Yes, electrons flow from the negative terminal to the positive terminal in a circuit. This is because electrons are negatively charged particles, and they are attracted to the positive terminal.

Assuming you are refereeing to a physical engine not one of the software variety. Its to propel motor vehicles.

Next time Phrase your question better and then you will get a better anwser.

Impressed voltage is the external voltage applied to a circuit, whereas induced voltage is generated within a circuit due to a changing magnetic field, typically caused by electromagnetic induction. Impressed voltage is controlled by an external source, while induced voltage is a result of the circuit's own dynamics.

Lines of force.

Lines of force.

Lines of force.

Lines of force.

Total voltage that you use in your home is constant. For Europe ~230V, for US ~120V. But the total power that you use differs and depends on total power consumption of the devices you use [Watt/h].

This will depend on the circuit configuration, and the wire.

For two equivalent types of wire (same covering, thickness, cross section, but different lengths) in a series circuit, where the surrounding on both wires is kept equivalent, heating will be equal per unit length (meaning the wires will reach the same temperature); The longer wire will use more power, which will cause more room heating (due to the longer length), but the wires themselves will reach the same temperature.

For the same two wires in a parallel circuit, the smaller wire will heat up more due to a larger current flow through it, thus a higher I^2 * R loss (heat loss) per unit length.

If two wires are put in parallel, and have different lengths, but are made to have the same resistance, the exact same amount of current will flow in each, but the shorter one will inherently have a higher resistance per unit length, causing it to become hotter than the longer wire.

When there is no current passing through a conductor, charges are stilll in motion, but they are disorganized and not flowing. The magnetic fields by all of those random movements cancel each other out. That is why there is no magnetic field in a conductor with no current, even though there is movement in the charges.

Because the impedance of the inductor and capacitor is not a real resistance / has an imaginary value that causes voltage and current to be out of phase.

An inductor's impedance is equivalent to j*w*L (j = i = imaginary number, w = frequency in radians, L = inductance), while a capacitor's impedance is 1/ (j*w*C).

The 'j' causes the phase shift.

The current in an induction motor decreases as it accelerates due to reduced rotor impedance and increased back EMF. As the motor speeds up, the rotor reacts with the rotating magnetic field produced by the stator, causing a decrease in the current needed to maintain acceleration. This decrease in current helps to improve the motor's efficiency and reduce energy consumption.

Several reasons for different voltages. At the heart of it is that to deliver the same power, voltage and current are inversely related. The other aspect is safety.

So for the grid, high voltages are used to maximize power transmission within the current limits of the cables.

In industrial environments, equipment may require a lot of power - that requires high voltages as well

Domestic requirements are not so power-hungry so 120 or 240 volts are adequate, and are also safer (well... less dangerous) than higher voltages.

20,000 volts = 20 kv

You can use a transformer with a turns ratio of 24:5 to convert 24 VAC to 5 VAC. This means the primary winding has 24 turns for every 5 turns on the secondary winding, which will step down the voltage proportionally. Make sure the transformer is rated for the appropriate power and frequency.

A transformer that increases voltage is a step-up transformer.

A transceiver is a device that can both transmit and receive a radio signal. It combines both functions in a single unit, allowing for two-way communication over radio frequencies. Transceivers are commonly used in applications such as two-way radios, walkie-talkies, and wireless communication systems.

The constant flow of electrons through a complete circuit is known as electric current. It is measured in amperes (A) and is driven by a voltage difference between two points in the circuit. The flow of current allows electrical energy to be transferred and used to power devices.

Conductivity in a metal results from the metal atoms having loosely held electrons that are free to move and carry electric charge. These free electrons can easily flow through the metal lattice, allowing for the efficient transfer of electrical energy.

The settings on your battery charger may vary the charge voltage (e.g. 6V and 12V) or the charge rate (e.g. 2A and 6A). Because you say that your charger has three settings, I would guess that either the charge voltage is fixed at 12V (and you have 3 choices for charge rate) or you have one setting for 6V and two choices for charge rate at 12V.

Make sure the voltage is set to the markings on your battery. This is most likely 12V, but it's best to make sure. If you can't match the setting (you have a 12V only charger and your battery is 6V), you must use another charger or you are likely to damage the battery and to risk explosion.

The charge rate setting is meant to allow you to charge batteries of different sizes. A lawn tractor battery probably should be set at the lowest charge rate, say 2A. Larger batteries, like the one in your car, can be charged at higher rates. Charging at a low rate prevents the build-up of heat in the battery and reduces the risk of damage.

Capacitors used in electronic circuits need not have a minimum voltage rating of 25 volts. Electronic circuits powered by batteries at 12 volts and below should work fine with capacitors rated at 15 volts.

A common cathode is a shared terminal in a multiple LED or display device where all the cathodes of the individual LEDs are electrically connected. This configuration allows for the LEDs to be controlled independently through their anodes.

Electrons are negatively charged particles. The reason the negative side of your D battery is negative is because that's where the free electrons are. The positive terminal is starved or has a deficit of electrons. The negatively charged electrons naturally want to fill the 'holes', in atoms lacking an electron on the positive side. Thus electron flow is from negative to positive. Conventional current flow assumes that current flows out of the positive terminal, through the circuit and into the negative terminal of the source. This was the convention chosen during the discovery of electricity. They were wrong!

all metals in pure form are conductive, that's because they will always have free electrons circling around them ready to be used as electricity.