Yes for a closed circuit
It's not.
The voltage across the resistor is whatever voltage is applied. The only maximum here would be a voltage that would damage the resistor. If you think this might happen, you'll have to look up such a voltage from the data sheets.
the potential difference across the single 4ohm resistor is 230volts.
Current = charge (electrons) flowing through a resistor.Voltage = energy lost across a resistor.Power = energy lost across a resistor per second.So yes you are correct. Current is established through a component, while voltage and power are established across a component.Answer'Voltage' is a synonym for 'potential difference'. As the name implies, voltage describes the difference in potential between (or 'across') two different points. So voltage is applied ACROSS a resistor.Further to the original answer. voltage is NOT equivalent to 'the energy lost across a resistor', and power is NOT 'established across a resistor' (power is simply a 'rate', nothing more)!
Since voltage is electrical potential difference, to measure the voltage across a component, you place the voltmeter across, or in parallel with, the component.
The voltage applied to the voltage coil of a wattmeter must not exceed the voltage rating of that coil.
By connecting a voltmeter across the secondary terminals of the voltage/potential transformer. The transformer acts to reduce the voltage applied to its primary winding, while electrically-isolating the primary (usually high-voltage) circuit from the voltmeter.
Yes, there is a relationship between the sums of electrical potential differences in a circuit and the electrical potential across the source. The sum of the potential differences around a closed loop in a circuit equals zero, known as Kirchhoff's Voltage Law. This means that the sum of the potential drops across circuit elements is equal to the potential rise across the power source.
No. If a voltage is applied across a resistor, a current flows through it.
In a series circuit, the potential voltage across the circuit components adds up to the total voltage of the circuit.
The reason an AC voltage applied across a load resistance produces alternating current is because when you have AC voltage you have to have AC current. If DC voltage is applied, DC current is produced.
When a voltage is applied across it.
It's not.
See the related link for a circuit diagram. The diagram pretty well explains how it works also. A potential is applied across the potentiometer. A movable contact moves across the voltage developed across the fixed portion and picks off the desired voltage.
A voltage is never applied to the secondary It can be used as a source but hen it becomes the primary by definition
Voltage does not 'run through' anything! Voltage is another word for potential difference which exists across a circuit's load. You can think of voltage as being equivalent to 'pressure' -pressure does not 'run through' anything, either, it is applied 'across' two points in a hydraulic or pneumatic system.So, if the appliances are connected in parallel (usually the case), then the potential difference across each appliance will be the same.
Voltage on a light bulb is determined by the amount of electrical potential difference applied across its terminals. The higher the voltage, the brighter the bulb will shine. Light bulbs are typically rated to operate at a specific voltage, such as 120V for standard household bulbs.