Electronics Engineering

240 volts - the turns ratio of this transformer is 2:1, thus the primary voltage will be two times the secondary voltage.

No, we don't find the output force of a system is greater than its input. We've never seen this. There are losses associated with any system, whether they be mechanical, thermal or other. That prevents a situation where we can get more energy out of a system than we put in.

We don't know all there is to know about physics, but we know a lot. If we knew how to get more energy out of a system than we put into it, we'd have applied that to generate electrical power. Consider how we provide electricity ot the power grid now and think it through to confirm the idea that we don't know of a way to get more energy out of a system than we put in. Perpentual motion isn't something we've realized, either.

Current (amps)=Watts/Volts =2000/120 =16.75 =16.75 amps

Depends on the complexity of the logic it's planned for... People talk about 'millions' of transistors to highlight the importance of ICs.

For instance in a motor driver IC, there's nothing but a H-bridge used to control the path of current across the motor. Mainly 4 transistors are involved. In advance, to avoid unnecessary current flowing possibilities, for the sake of safety logic gates (simple ones) are built in. (Logic gates are also built with transistors, just few.)

So, overall there'll be only 10 (just assume) transistors.

But in complicated ICs there could be hundreds, millions of transistors..like in a microprocessor.

The AC power adapter is used to power electronics of many kinds. Some popular electronics include tape recorders, VHS players, laptops, and video game consoles.

Because ammeters have low resistance. If you connected them in parallel, all the current would flow through the ammeter instead of the circuit you were trying to test, possibly frying the meter but certainly invalidating the measurement.

second onetransmits,first onereceives.

It is nothing but how much current or voltage taken in the circuit. It is known as Magnitude.

A transformer is an electrical machine whose purpose is to either 'step up' or 'step down' a voltage. For example, the voltage generated by an alternator in a power station is far too low for transmission, so a 'step up' transformer is used to increase that voltage to transmission levels. Transmission voltages are then gradually reduced, using 'step down' transformers at load centres (e.g. towns) where the electricity is to be used.

impurity is nothing but a foreign element. donor corresponds to donating an e-. So donor impurities are those which generally have 1 e- more than the material ( generally semiconductors) in which they are doped so that after covalent bonding they can donate that extra e-.

The wire isn't connected any more so the electrictiy can't flow any more so it is an open circut it doesn't work any more until you connect it ^_^

Charge the capacitor with a voltage source through a resistor. Keep track of how long it takes the capacitor to charge to the voltage level. The value of the capacitor is c=time/5R where R is the value of the resistor and time is the charging time.

the digital signals frequency is infinite ,i.e ranges from 0.....infinity

There are a lot of qualities that help individuals achieve their ambitions. I think the two most important are dedication and discipline. You have to always do that little extra and be disciplined enough to not make mistakes.

ha ha, why not search from the web? ha ha, why not search from the web?

Magnetic fields currently flows through a conductor is determined by multiplying the number of turns of wire by the current flow. This is what causes electricity.

The five types of neural circuits are feedforward circuits, feedback circuits, reciprocal circuits, divergent circuits, and convergent circuits. Feedforward circuits allow signals to travel in one direction, while feedback circuits enable signals to loop back to earlier stages for modulation. Reciprocal circuits involve bidirectional communication between neurons, and divergent circuits spread signals to multiple targets, whereas convergent circuits integrate inputs from various sources into a single output. Each type plays a crucial role in processing and transmitting information within the nervous system.

This really depends on the scenario. What type electrical circuit are you talking about.

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one condition for the above question is either conductor or magnetic field must be rotating.considering rotating field and stationary conductor,the magnetic flux will be cut up by conductor resulting in the induced emf in the conductor.

Inductive reactance does NOT have it own sign or symbol. Rather, it uses Ohms as a quantifier. But Capacitive reactance ALSO uses Ohms as a quantifier. Fortunately, 1 Ohm of Inductive reactance is cancelled by 1 Ohm of Capacitive reactance at the same frequency of measurement.

Both the supply wires that enter a series motor is the field windings the field is split in two and is connected at the split to the brushes that is connected to the commentator of the armature, so the current pass thru the first half of the field then thru the armature and then thru the other half of the field. With a parallel DC motor the two fields is in series and the two wires is connected to the brushes so is the supply.

Ohm's Law: Voltage is resistance time current

So, 28 ohms and 3.8 amperes means 106.4 volts.

In principle, yes, but you wouldn't want to wait around to do the job that way.

Human ears are very sensitive, and the sounds around you carry very little energy

compared to the energy used by common electrical gadgets. One or two watts of

pure tone from a loudspeaker will drive you out of the living room, and the "ear buds"

are blasting no more than a few milliwatts of sound power into your ear canals.

You could hang a microphone out of your window, and use the sounds of traffic

as you drive. It might charge your cellphone in a couple of weeks ... if you leave

the phone turned off and don't use it.

• Electromotive force, also called emf is measured in volts
• It is the voltage developed by any source of electrical energy such as a battery or dynamo.
• The word "force" in this case is not used to mean mechanical force, measured in newtons, but a potential, or energy per unit of charge, measured in volts.
• In physics, the electromagnetic force is an influence that affects electrically charged particles. Along with gravity, it is the force that humans encounter most on an everyday basis, and it explains most of the phenomena with which people are familiar. It is responsible for electricity, magnetism, and light; it holds electrons and protons together in atoms; and it allows atoms to bond together to form molecules and drives chemical reactions. This force is also responsible for the solidity of solid objects and is the reason they cannot pass through one another.
• The electromagnetic force is one of the four fundamental forces of nature. The other three are the gravitational force, the strong nuclear force, and the weak nuclear force. The strong nuclear force is the strongest of these, but it operates only over an extremely short range.
• The electromagnetic force is the second strongest and, like gravity, operates over unlimited distances.