In order to calculate the complex power of a circuit, the conjugate of current is used. The Vrms of the circuit is multiplied by the complex conjugate of the total circuit current.
The voltmeter is connected parallel to the circuit in order to measure the voltage drop across that circuit or sub-circuit. If you were to connect the volmeter series to the circuit, since it is a high impedance device, it would represent an effective open-circuit condition. You would see the voltage available to the circuit, but the circuit would not receive its intended current and it would not function. Contrast this with the ammeter, which you do place series to the circuit in order to measure the current flow through the circuit.
Yes. The arrangement doesn't change the current through the circuit, or the voltage acrosss any individual component.
To lower the voltage and amperage in order to better fit the needs of other components.
It needs to be in good working order. If there are any cracks or tears in it, then it might not work properly.
In series with the circuit and never in parallel. The reason being that it will cause the circuit total resistance to drop which will make the circuit draw excessive current. That's a short circuit actually.
A circuit must be closed in order for a current to flow because it helps keep a current flow pass. When the switch is closed on a circuit there is a constant flow. When the switches open the flow is disturbed around the circuit.
The trip coil has the whole circuit load amperage flowing through it. Thepurpose of the breaker is to only allow current up to its trip point. That is the only way that the breaker can sense if the current is within the limit rating. If the circuit load amperage becomes greater that the breaker rating it will trip. The trip coil that you refer to is a magnetic trip which senses the magnetic field that surrounds the wire. Breakers also have a thermal trip which senses a heat build up on the current flowing through it. If the breaker is in a high ambient temperature it will lower the rating on the breaker.
The energy carried by an electric current depends on a conductor in order to flow. an Insulator disrupts the flow
In order to calculate the complex power of a circuit, the conjugate of current is used. The Vrms of the circuit is multiplied by the complex conjugate of the total circuit current.
An electric circuit needs to be a closed circuit in order for the current to continuously flow from the power source through the electrical components and back to the source. An open circuit, where there is a break in the circuit, would prevent the flow of electricity and disrupt the operation of the circuit.
An energy source is needed to provide electrical energy to the circuit components such as resistors, capacitors, and bulbs. Without an energy source, there would be no electrical current flowing through the circuit, and no power for the devices to operate.
A circuit must be closed in order for a current to flow because it helps keep a current flow pass. When the switch is closed on a circuit there is a constant flow. When the switches open the flow is disturbed around the circuit.
An electric current needs a closed circuit, which provides a complete path for the flow of electrons. This circuit typically includes a power source, such as a battery or generator, connecting wires, and a load, such as a light bulb or motor, that utilizes the electricity. Without a closed circuit, electrons cannot flow continuously and no electric current is generated.
If you open part of the circuit (for example, with a switch), the current will stop flowing. Also, if there is no voltage driving the current (for example, if a battery runs empty), no current will flow.
voltage and ground
In order to have a valid electric circuit, two requirements must be met: there must be a potential difference within it (measured in Volts), and current must be flowing through it (measured in Amperes). That implies that the three basic blocks of a circuit are present - a power source (that defines the potential and supplies the current), conductors (which connect the power source to the load), and the load, which consumes current to do some work. Coincidentally, lack of a potential difference means that there are no charges "willing" to travel between point A and point B, which means that there is no current flowing from A to B (or otherwise), in regard to just these two measurement points. Of course, if you connect just your voltmeter to a battery, you will see a readout - that is because the voltmeter completes the circuit (and is doing some work for you), and since the circuit is complete, the current is flowing, and that implies a difference of potential.