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Ohm's Law simply states that, under certain circumstances, the current (I) passing through a circuit is directly-proportional to the potential difference (U) applied across that circuit.
So, strictly speaking, Ohm's Law, relates just twoquantities: current (expressed in amperes) and potential difference (expressed in volts).
The ratio of potential difference to current is, of course, resistance (R). So, by extension, Ohm's Law can be written as R = U/I. But, strictly speaking, resistance is not mentioned in Ohm's Law.
However, it must be realised that Ohm's Law is NOT a universal law; in other words, it does not apply in all circumstances. In fact, it does not apply to a great many electronic devices, such as diodes, etc. In fact, it only applies to pure metal conductors provided their temperature remains constant for variations in voltage.
What else can I help you with?
When a three light circuit is connected in series with 2 6V batteries what is the voltage across each of the lights?
If a three light circuit is connected in series with two 6V batteries, and the three lights are identical, the voltage across each of the lights is 12V divided by 3, or 4V.
Is there continuity between a three pole circuit breaker terminals?
No, the three individual poles of a three phase circuit breaker are not electrically connected to each other. If they were, a fault would develop internal to the breaker.
What is the function of a variable resister in an electrical circuit?
A variable resistor usually has three terminals, one of which is connected to the 'wiper' by which means its resistance is measured. By using all three terminals, we can control the potential difference in a circuit. When used in this way, we call the variable resistor a 'potentiometer'. By using two of the three terminals, one of which must be connected to the variable wiper, we can control the current passing through circuit. When used in this way, we call the variable resistor a 'rheostat'.
When three resistors are connected in series the amount of voltage that is measured across each one is determine by what?
The voltage drop across each resistor is determined by the amounts of resistance in the 3 resistors and all the rest of the resistances in the electrical circuit.
What can be produced by electrical current in a simple circuit?
There are three effects produced by an electric current:heating effectmagnetic effectchemical effect
What is a three-way switch and how does it function in a typical electrical circuit?
A three-way switch is a type of electrical switch that is used to control a light or other electrical device from two different locations. It has three terminals and allows the circuit to be turned on or off from either switch. In a typical electrical circuit, the three-way switch works by allowing the flow of electricity to be redirected between the two switches, depending on their positions, to control the connected device.
When a circuit is described as a three-phase delta-connected 240 v circuit its categorized by?
circuit characteristics.
A complete circuit is made of three things?
A complete circuit is made up of a power source (such as a battery), a load (such as a lightbulb), and conductive material (such as wires) connecting the two. When these three elements are connected in a closed loop, electrons can flow through the circuit, allowing the load to receive electrical energy and operate.
What is the three way switch symbol used for in electrical circuit diagrams?
The three-way switch symbol in electrical circuit diagrams is used to show a switch that can control a light or other electrical device from two different locations.
If you have three light bulbs on a circuit but all the bulbs have a different electrical path what kind of circuit do you have?
Parallel.
What is a four-way switch and how does it function in a electrical circuit?
A four-way switch is a type of electrical switch that is used to control a single light or fixture from three or more different locations. It functions by allowing the circuit to be opened or closed from any of the connected switch locations, providing flexibility in controlling the light or fixture from multiple points.
What is a 3 way light diagram and how can it be used to understand the wiring configuration of a three-way lighting circuit?
A 3-way light diagram is a visual representation of the wiring connections in a three-way lighting circuit. It shows how the switches, lights, and wires are connected in the circuit. By studying the diagram, one can understand how the electrical components are linked together and how the circuit functions to control the lights from two different locations. This helps in troubleshooting and making changes to the wiring configuration of the three-way lighting circuit.
How does a torch work-circuit?
A torch is simply a circuit containing a battery, a bulb and a switch. The three components are connected in series (one after the other) to form a loop. The switch simply completes the circuit so that power flows from the battery to the bulb.
When a three light circuit is connected in series with 2 6V batteries what is the voltage across each of the lights?
If a three light circuit is connected in series with two 6V batteries, and the three lights are identical, the voltage across each of the lights is 12V divided by 3, or 4V.
What is the 3 prong wire diagram used for in electrical circuits?
The 3 prong wire diagram is used to show how electrical devices are connected to a power source with three wires - hot, neutral, and ground. It ensures safe and proper functioning of the circuit by providing a path for electricity to flow and preventing electrical hazards.
Is there continuity between a three pole circuit breaker terminals?
No, the three individual poles of a three phase circuit breaker are not electrically connected to each other. If they were, a fault would develop internal to the breaker.
Circuit in a sentence?
A circuit needs at least three electrical contacs.
