Electrical Engineering

A diode is made up of a P-Type and an N-Type semiconductor. P-Type has "missing" electrons (in a sense); N-Type has extra electrons (in a sense). This means that if you have current going through the two semiconductors from N-type into P-type, it should be easier than normal to apply the current because there is a potential difference between the N-type and P-type because of their relative "positivity" and "negativity". ...but if you reverse the voltage, then you are going against this potential difference and hence the voltage is impeded, resulting in a 0 current (in theory). This will only happen until the reverse voltage exceeds a threshold ampage, at which point the current will shoot up (in reverse).

It is a basic tenet of physics that, in a closed system, energy can neither be created nor destroyed. Energy can, however, be transformed. It follows from this that the power output from a system cannot exceed the power input. Therefore, in a transformer, the primary power and the secondary power are always equal (at least in theory). A transformer can step voltage up or step it down. Since power equals voltage multiplied by current then, if the transformer secondary voltage is stepped up, the current must be stepped down by the same factor (that is, if the voltage is stepped up by a factor of 4 then the current is stepped down by a factor of 4). Any increase in voltage in the secondary of a transformer will result in a corresponding inversely proportional decrease in secondary current. From a practical standpoint, secondary power is always somewhat less than primary power due to resistive losses in the transformer windings as well as eddy current and hysteresis losses (magnetic losses) in the transformer core. These losses produce heat which compounds the transformer inefficiency. The primary and secondary windings are made from copper and, like all metals, it has a positive temperature coefficient of resistance. This is a fancy way of saying that when the copper windings of a transformer get hotter their electrical resistance goes up which further increases the resistive losses in the transformer.

Current through a capacitor is proportional to the rate of change of voltage across it. But in the case of dc supply, the rate of change of voltage is zero. Hence the capacitor current is also zero.

Capacitive reactance -- the "resistance" of a capacitor to current flow -- is found by 1/(2*pi*f*C). For high frequencies, this "resistance" is low, allowing current flow. The lower the frequency, the higher this "resistance" is. DC or direct current is consider "zero" Hertz frequency and the capacitive reactance ("resistance") at this point is infinite, allowing no current flow at all. So, the higher the frequency, the easier it is for the signal to pass through the capacitor; the lower the frequency, the more difficult it is for current to pass and impossible for DC.

A: It all depends on the engine idle speed and cylinders. All cars at idle speed must charge the battery to 13.68 volts the RPM is a function of cinders

Wel,u have the Intel p 1 and p2 p3 p4 then centrino and then core duo and then centrino duo then centrino duo core duo also u have the amd athlon whis is standard

Now yow have Quad Core, I3, I5, I7 Processors

total resistance of a parallel connection network of resisters is

equals the total resistance divided by one.

1/total R = 1/R1+1/R2+1/R3+................+1/RN

since we get 1/total R from the above formula, to get total resistance (total R) just reciprocate the answer.

secondly, if u have only two resistors connected in parallel say R1 & R2, then total Resistance total R=(R1*R2 )/R1+R2

inform.mayaprasad@gmail.com

Power = Current * Voltage

P = I*V


therefore for the same power, when the current decreases, the voltage increases

this is the concept that is used in transformers for power transmission (increasing the voltage and reducing current to reduce power loss in transmission lines).

it allowed artists sound to travel farther and be louder. pluss it gave a bit of a different sound inspiring more genres.

yes because of bulb resistance :)

1. A transfer corona it's a thin wire usually protected by other thin wire that applies a positive charge to the paper drawing the negative charge particle's on the paper.

Ohms law states that E=I * R, or voltage equals current times resistance. Therefore current equals voltage divided by resistance. 120v divided by 16 ohms equals 7.5 amps.

You don't.

...unless you want to directly measure the current in a circuit branch. That's the purpose of an ammeter.

You can also use a volt meter if you know the resistance of a resistor in that branch to determine current (assuming DC circuit here) - current = voltage / resistance. This may be more useful for circuitry that is on a breadboard, since inserting an ammeter may not be practical.

On 11-66kV not less than 5,5 metres,with hazard signs on both sides indicating height of line.

A series circuit is like the old string of Christmas Tree lights. If any bulb burns out none of the others light because the circuit is now open. The same would happen if you used series wiring in a house. Another draw back is the number of devices in series governs how much voltage would be across each device.

If the switch is what is keeping the load from turning on, then yes, there is a voltage across the open switch.

In a series circuit, components (such as resistors, bulbs, or other devices) are connected end-to-end so that there is only one path for the current to flow. Because there is only one pathway for the current, the same current passes through each component in the circuit.

This principle is derived from the conservation of electric charge. Since charge cannot accumulate or disappear in a closed circuit, the current that enters a component must be equal to the current that exits that component. In other words, the flow of current is continuous and consistent throughout the series circuit.

Mathematically, this can be expressed as:

I_total = I_1 = I_2 = I_3 = ... = I_n

Where:

I_total is the total current entering the series circuit.

I_1, I_2, I_3, ..., I_n are the currents through each individual component in the circuit.

It's important to note that while the current remains the same throughout a series circuit, the voltage (potential difference) across each component can vary depending on its resistance or impedance, according to Ohm's Law (V = I * R).

The symbol, kV.A (not 'kva'), represents kilovolt amperes, which is the unit of measurement for apparent power -i.e. the product of supply voltage and load current in an a.c. circuit. The symbol, kV (not'kv'), represents kilovolts, which is the unit of measurement for potential difference.

Positive aspects of becoming a computer technician include being able to fix your own computer. The job has room for growth, there is flexibility in career options, and computer technician jobs typically pay well.

the AC electric generator was invente by Nikola Tesla. He invented in the late to early 1800's and 1900's. This idea was recently accepted by scienctists.
According to the website linked below, it was invented in 1663.

An electricity board will be fixed some amount of load for consumer (industry or commercial) as per consumers requirement.That is maximum load or maximum demand.

The counterweight balances the load in the lift-shaft.