Electronics Engineering

To find the voltage required to send a current of 4 amps through a resistance of 60 ohms, you can use Ohm's Law:

V = I x R

where V is the voltage, I is the current, and R is the resistance.

Plugging in the values:

V = 4 amps x 60 ohms

V = 240 volts

So, you would need 240 volts to send 4 amps through a 60-ohm resistor.

It refers to how small a signal a receiver can process. All receivers have a "minimum discernable signal" (MDS). Below that level, background noise (static) will be all that you can hear. Your car radio may not process a 1,000 watt signal from a station 1,000 miles away but NASA has receivers that can process 0.1 watt signals from millions of miles away. A lot of it has to do with filtering and the number of amplification stages involved.

When current is suddenly passed through a conductor in a magnetic field, it experiences a force due to the interaction between the magnetic field and the current. This force causes the conductor to move, resulting in electromagnetic induction and the generation of an electric current in the conductor.

When the resistance is 960 ohms and the current is 2 amperes, we can use the formula for inverse variation: ( current \times resistance = constant ). Thus, ( 2 \times 960 = constant ), which is ( 1920 ). So, if the resistance changes to a new value, we can find the new current by dividing the constant by the new resistance.

AC generator, the brushes run on slip rings which maintain a constant connection between the rotating coil and the external circuit. This means that as the induced emf changes polarity with every half-turn of the coil, the voltage in the external circuit varies like a sine wave and the current alternates direction. DC generator, the brushes run on a split-ring commutator which reverses the connection between the coil and the external circuit for every half-turn of the coil. This means that as the induced emf changes polarity with every half-turn of the coil, the voltage in the external circuit fluctuates between zero and a maximum while the current flows in one constant direction

A joule is the work done by applying 1 watt of power for 1 second (J = W x Time in seconds).

1 Watt is 1 Amp at 1 Volt potential (W = Amps x Volts).

1 Amp is 1 coulomb of electrons flowing in a second.

1 coulomb is 6 241 509 629 152 650 000 electrons.

Thus it would appear that there are 6,241,509,629,152,650,000 electrons in a joule, except that 1 Joule could be 2 watts for half a second (or 4 W for 0.25 seconds).

Also 1 Watt could be 2 Amps and half a volt, or .01 Amps at 100 Volts!

The question has no one answer, it has an infinity of possible answers unless more parameters are dictated.

Ordinary ground is a simple connection to ground. Virtual ground is an op-amp's response to maintaining a reference point in the bridge with respect to an ordinary ground. This is why an op-amp makes a nearly ideal mixer - it allows you to sum multiple inputs together with little or (nearly) no cross-talk. (Limitations, of course, being based on CMRR and frequency response.)

over speed control is recommended for all prime mover driven generator to prevent over frequency operation of load connected to a system supplied by the generator and also to prevent possible over frequency operation of the generator itself from Ac system.

In an electronic circuit a capacitor can be used to block direct current. In general a capacitor stores electric charge. The charge in a capacitor is the voltage times the capacitance and that is also equal to the charging current times the time (all quantities in SI units - seconds, volts, amps, coulombs, farads)

DC (direct current) flows in one direction only, while AC (alternating current) changes direction periodically. DC is commonly used in batteries and electronic circuits, while AC is used in household electrical systems because it can easily be converted to different voltages using transformers.

The voltage sign represents the potential difference between two points in a circuit, measured in volts. It indicates the force that moves electric charges through a conductor. Voltage is a fundamental concept in electricity that determines the flow of current in a circuit.

In principle you can use a common wire for ac and dc in a low voltage low power circuit, for example 12 volts at up to about 20 watts. If the ac is at a power-supply voltage it must use separate wiring to comply with safety standards.

In low-power dc equipment like radios it is normal to use a step-down transformer with the ac live and neutral connected to the primary, and the earth connected to the transformer case, the chassis and one side or other of the dc supply taken from the secondary via a rectifier and smoother.

ohms law.

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The process is called grounding. Many devices need to be grounded, hence the U shaped pin on a devices that make contact with the ground in normal house wiring.

Not in our present understanding of physics. In all of our present mainstream physics' rulesets, in order for any object with mass to travel at the speed of light, it would require infinite energy, and that is just not going to happen. Don't even begin to think about going faster than light.

That said, there are always new things "just around the corner", but consider this... If faster than light travel were possible, why haven't we been visited by extraterrestrial beings? Hmmm...

Positive current flows from the positive terminal to the negative terminal, while negative current flows in the opposite direction. In electrical systems, positive current is used for generating electricity as it represents the flow of electrons from negative to positive, which is the direction of conventional current flow.

The run capacitor has to absorb the VARs while the motor is running, but the start capacitor has to provide running current to start the motor. The latter is higher, so more microfarads are needed to pass the greater current.

Current in a capacitor is 2pi x frequency x capacitance x voltage so, on a 240 v 50 Hz system, 100 mfd would take 2pi x 50 x 100 x 10-6 x 240 amps, and that is multiplied by the voltage 240 to find the VARs.

AC is short for alternating current and DC is short for direct current.

In the case of an AC signal the current is going backward and forwards at the rated frequency of the signal (so 240V at 50Hz would mean the terminals vary between 240V and -240V and back again 50 times a second). If you were electrocuted by AC you would be repelled away from it.

In the case of a DC signal the current is in one direction and the voltage will remain either positive or negative (so a 240V signal would stay at 240V and the current would flow positive to negative - conventional current). If you were electrocuted by DC you would stick to it and probably suffer some serious burns, which is one reason for high voltage electrical supplys being AC.

I hope that answers your question!

The load voltage can be calculated using Ohm's Law: V = I * R, where V is the voltage, I is the current, and R is the resistance. Substituting the values, V = 2 mA * 10 k ohm = 20 V. Therefore, the load voltage will be 20 volts.

Ge and Si have a valence shell with 4 electronics making them the starting point for semi-conductors. When mixed with atoms that have 3 or 5 electrons in the valence shell (AKA tri-valent and penta-valent) the blending or doping creates P-type and N-type materials - the building blocks for semi-conductors