What happen to current in a circuit if the voltage is not charge but the resistance is doubled?
The current in the circuit will be decreased by half. Ohm's law states V=IR so, I=V/R. If R is doubled, then I= V/2R.
A 120-V power supply connected to a 10-ohm resistor will produce how many amps of current?
120 volts into 30 ohms will produce 4 amps.
Ohm's Law: Current equals Voltage divided by Resistance.
Caution: Don't try this. The power in this case would be 480 watts, and an ordinary resistor would be destroyed by the heat generated, and might explode and catch fire.
In capacitive reactance how its formula can be determined in easy way. please answer?
The formula is 1/(j*w*C), where j is an imaginary number (this makes it reactance, not resistance), w is the frequency in radians, C is the capacitance.
If you want a proof of this, you should look at wikipedia under laplace transform. I'm sorry, the proof of this is probably not what you would consider simple or easy, if this is what you're looking for. It is based on calculus, and I know of no way to get around it.
What do teachers use spread sheets for?
Spreadsheets are used for a number of things.
Here are some examples:
Supermarkets for sales, wages and staff
Scientists for experiments and predicted.
Types of solder is used on printed circuit boards?
threw a machine or by hand heres a company that does this plus they assemble circuit boards
spectra tech manufacturing inc
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What is the relationship between common base and common collector?
It all depends which lead is connected to the common power supply, Emitter, base or collector.
For most amplification needs using NPN transistors, common emitter is used.
Other applications are used for current control and regulation circuits.
What is the difference between hand soldering and soft soldering?
The type of material used to connect the pieces. Solder is used on copper or brass. Brazing uses a copper alloy and is used on Iron based items. Same process in how it is done.
What is the difference between 6 ohms and 8 ohms?
Though it is tempting to say the difference is 2 ohms (8 ohms minus 2 ohms equals 6 ohms), lets look at some things. The 6 ohms is 3/4ths the resistance of the 8 ohms. If the resistances are loads, the 6 ohm load will draw 1/3rd more current than the 8 ohm load. The 8 ohm load will draw 3/4ths as much as the 6 ohm load. Those are some differences between 6 ohms and 8 ohms.
What name is aplied to the two types of BJT transistor?
PNP and NPN. The NPN is easiest to manufacture and implement.
Not really a third type is the Darlington Pair, but students tend to blush when they talk about it. It has a higher gain and is contructed from two NPN's.
How is colpitts oscillator better than hartley oscillator?
No because hartley uses inductors which are bulky and economically not feasible to obtain tuning inductors as compared to colpitt's which uses capacitors which are relatively very cheap and small.
If a carbon resistor increases in temperature its resistance will?
This depends on the type of conductor. If the conductor has a positive coefficient the resistance will increase.
If the conductor has a negative temperature coefficient the resistance will decrease.
A pre-amp is a type of amplifier used in sound systems. It usually amplifies the signals coming from microphones or low amplitude signals coming from any other sources. The pre-amplified signals can then be amplified to a greater extent when the signals are sent to the main amplifier. Because some microphones are low voltage or are wireless the signals are weak compared to older style microphones.
Taking the question at face value, the internal resistances will be treated like "real" resistors in the circuit. That means we have 3 batteries of 1.5 volts each connected in series with their 2 ohms + 2 ohms + 2 ohms of internal risistance, or 6 ohms of internal resistance. The 6 ohms of internal resistance acts in series with the 44 ohms of resistance stated as the value of the resistor. The total resistance is simply the sum of the two, or 6 ohms + 44 ohms or 50 ohms of total resistance. The batteries are connected in series, and their individual voltages are added to find total applied voltage. That means 1.5 volts + 1.5 volts + 1.5 volts or 4.5 volts will be the total applied voltage. Total current in the circuit (and through our 44 ohm resistor) will be the voltage applied divided by the resistance ( I = E / R), which, in this case, is 4.5 volts / 50 ohms which equals 0.07 amps. That's 7/100ths of an amp, or, in electronics speak, 70/1000ths of an amp, or 70 milliamps, or 70mA of current. The circuit is a series circuit, and that current, the total circuit current, will be flowing through each and every component of the circuit. That's what a series circuit means.
Was Germanium used in transistors?
Yes, germanium was the only material used in transistors from when they were invented in 1947 until 1954 when the first successful silicon transistor was made.
However the use of germanium still dominated transistors until the silicon mesa transistor was made commercially available by Fairchild Semiconductor in 1958. Development of the silicon planar transistor by Fairchild Semiconductor the next year ultimately made the integrated circuit possible.
While almost all transistors today are silicon, there are still uses for germanium transistors so a few types are still made.
An increase in wind causes this current to increase What type of current is it?
Convection is the process that causes warm air to rise and cold air to sink. As such, the winds caused by this process are called convection currents.
What is the conversion of KV to KVA?
These are two incompatible units. Ignoring the kilo- prefix (1000), we have V (Volts) and VA (Volt-Amps). VA is a rating of power, typically on transformers and related equipment. So while you cannot _convert_ from KV to KVA, you can calculate one from the other. For example, a 240V transformer rated to supply 100A of current would be a (240*100 = 24000) 24kVA transformer. Power = Volts * Amps.
How does the peak value of an alternating voltage compare to its quoted value?
The quoted value is usually RMS value, i.e it is lesser than the peak value of the voltage, therefore the peak value is sqrt(2) times the quoted value. (it is a sine wave)
What is the name of the device that changes the ratio of a current in voltage?
A transformer. it steps up / down voltage, and steps down / up current.
Will 1500 watts work on 220 volts?
Using the formula I = W/E, the current of the circuit will be 6.8 amps. As long as the wire is at least a #14 and is protected by a 15 amp two pole breaker There will be no problem. Just make sure that the specifications on the 1500 watt device clearly show that the voltage range is 220 - 240 volts.
It certainly can, but it would depend on the fuse rating and existing load on the circuit.
This Easy to build PIC based IC tester is very easy to make and highly reliable.This IC tester can successfully check the most of the IC's we are using in our normal project constructions such as TTL,74,74F,CMOS 4000 series.This could be very useful for the professionals as well as hobbyist.
If you double the voltage in a circuit, the power is quadrupled, assuming the resistance stays the same.
What purposes do electron tubes serve?
Electron tubes are used to manipulate electronic or electrical signals. They can be employed to convert AC to DC, amplify, attenuate, switch, mix, or generate audio or radio signals. Tubes have been mostly replaced by solid-state devices such as the transistor, but still have some applications in modern electronics.
The resistance of a conductor is directly proportional to its length, hence increasing the length twice will increase the resistance twice as well. Therefore the resistance will be 2*10 = 20 Ohms