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An electrical cell is the basic unit from which electrical batteries are made.
The cell is composed of two plates made of different conductive materials and a liquid electrolyte (in "dry" cells this liquid is in the form of a moist paste). Electric charge is produced between the two plates by the electrolyte interacting with and causing corrosion of one or both plates.
Once the electric charge is produced the corrosion process slows or stops, unless an external circuit is connected between the plates. When an external circuit is connected between the plates, current flows through that circuit and the electric charge is slightly reduced. The corrosion process continues at a rate necessary to maintain the electric charge, until the chemicals in the cell are used up.
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What causes an elecrtic current to flow in a circuit?
The movement of electron towards the high potential causes electric current to flow in a circuit.
What do a direct electrical current is different from an alternating current because only the direct electrical current means?
In Direct Current, electrons flow from the negative pole of the electrical source, through the load, to the positive pole of the electrical source. Current is constant as there are no variations in voltage over time in the circuit. Voltage and current are measured by directly measuring the voltage and current in the circuit. In Alternating Current, electrons also flow from the negative pole of the electrical source, through the load, to the positive pole of the electrical source. However, the polarity of the poles changes +/- to -/+ to +/- , alternating polarity over and over again. This causes the direction of the electrons in the circuit to change each time the source poles change polarity. Current and voltage are not constant in an AC circuit as they vary with the waveform generated by the electrical source. In many, but not all cases, voltage and current are measured by the RMS (root-mean-square) method as directly reading the peaks of the AC waveform will not indicate the correct amount of energy in the circuit.
In an automotive electrical series circuit what will be the effect of adding additional resistance?
Everything in the series circuit will run dimmer / slower / cooler.Since the available voltage is constant (13.6 volts from the battery), increasing the resistancein the circuit causes the current through each device to decrease.
Is An open in the main line of a parallel circuit causes all individual branch currents to be zero?
Yes, an open in main line of a parallel circuit will effect the entire circuit current and make the whole circuit current zero
What happens in a short circuit occurs in an electric circuit?
A short circuit is a condition whereby a point or section of the circuit offer a short path for current to return to the power supply. It occurs when two or more points or sections of the circuit touches each others (but only and only if that results in drop in resistance to such an extent that it causes excessive current to flow through.
How does a resistor affect the flow of current in an electrical circuit?
A resistor restricts the flow of current in an electrical circuit by resisting the flow of electrons. This causes a decrease in the amount of current that can pass through the circuit.
What causes electrical resistance in a circuit?
Electrical resistance in a circuit is caused by the collisions of electrons with atoms in the material through which the current is flowing. This collision results in the conversion of electrical energy into heat.
What causes a voltage drop in an electrical circuit?
A voltage drop in an electrical circuit is caused by resistance in the circuit components, such as wires, resistors, or other devices. This resistance reduces the flow of current and results in a decrease in voltage across the circuit.
What causes a current in an electric circuit?
Voltage causes current to flow in an electric circuit.
What creates voltage in an electrical circuit?
Voltage in an electrical circuit is created by the difference in electric potential between two points, which causes the flow of electrons from a higher potential to a lower potential, generating an electrical current.
What trips a circuit breaker and causes it to shut off the flow of electricity?
A circuit breaker trips and shuts off the flow of electricity when there is an overload of current or a short circuit in the electrical circuit.
How do resistors reduce voltage in an electrical circuit?
Resistors reduce voltage in an electrical circuit by impeding the flow of electric current, which causes a drop in voltage across the resistor. This drop in voltage is proportional to the amount of resistance in the circuit.
How do resistors lower voltage in an electrical circuit?
Resistors lower voltage in an electrical circuit by impeding the flow of electric current, which causes a drop in voltage across the resistor. This drop in voltage helps regulate the overall voltage in the circuit and control the amount of current flowing through it.
What causes a electric current in a electric circuit?
Voltage causes current to flow in an electric circuit.
What causes voltage drop in electrical circuits?
Voltage drop in electrical circuits is caused by the resistance in the wires and components of the circuit. When current flows through a circuit, some of the electrical energy is converted into heat due to this resistance, leading to a decrease in voltage along the circuit.
What causes a circuit breaker to trip?
A circuit breaker trips when there is an overload of electrical current flowing through the circuit, causing it to heat up and trip the breaker to prevent damage or fire.
What is the electrical pressure that causes electrons to flow?
Voltage, measured in volts, is the electrical pressure that causes electrons to flow in a circuit. Voltage is what pushes electrons through a conductor, such as a wire, and is necessary for the flow of electrical current.
