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The longer the conductor the greater the end to end resistance.
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∙ 12y ago
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What is the difference between insulation resistance and earth resistance?
insulation resistance can be measured by means of megger, with built in d.c generator. It is measured between the conductor and the earth. earth resistance can be measured by means of earth resistance tester. For good effective earthing, th earth resistance should be of order 0.5 ohm
The ratio of the potential difference across a metallic conductor to the current in the conductor is known as?
That is the resistance, measured in ohms.
What happens to insulation resistance when increasing cable length?
The insulation resistance remains the same throughout the entire length of the conductor.
If A conductor has a resistance of 0.8 ohms what will happen to its resistance if the temperature is decreased?
The resistance of a conductor is directly proportional to the resistivity of the conductor. since the resistivity of a conductor is decreases with decrease in temperature hence the resistance.
What happens to resistance when length of conductor is doubled without affecting thickness of conductor?
Nothing. Resistivity is a physical characteristic of a material. It's not affected by its shape, etc.
What are the three electrical guantities?
The three electrical quantities are current voltage and resistance. Current is measured in amperes (A) and is the rate at which electricity flows through a conductor. Voltage is measured in volts (V) and is the electrical force pushing the current through the conductor. Resistance is measured in ohms () and is the opposition to the flow of current. Current - measured in amperes (A) Voltage - measured in volts (V) Resistance - measured in ohms ()
What is the difference between earth resistance and insulation resistance?
insulation resistance can be measured by means of megger, with built in d.c generator. It is measured between the conductor and the earth. earth resistance can be measured by means of earth resistance tester. For good effective earthing, th earth resistance should be of order 0.5 ohm
What is the difference between insulation resistance and earth resistance?
insulation resistance can be measured by means of megger, with built in d.c generator. It is measured between the conductor and the earth. earth resistance can be measured by means of earth resistance tester. For good effective earthing, th earth resistance should be of order 0.5 ohm
What is the relationship between voltage and MA?
The "current" through any conductor is voltage across the conductor/conductor's resistance .The current is measured in "Amperes" (amps)."MA" stands for "Milliamps". There are 1,000 of those in one whole ampere.So, the current through a conductor is1,000 times the voltage across the conductor/conductor's resistance . . . in MA
The ratio of the potential difference across a metallic conductor to the current in the conductor is known as?
That is the resistance, measured in ohms.
What happens to insulation resistance when increasing cable length?
The insulation resistance remains the same throughout the entire length of the conductor.
If A conductor has a resistance of 0.8 ohms what will happen to its resistance if the temperature is decreased?
The resistance of a conductor is directly proportional to the resistivity of the conductor. since the resistivity of a conductor is decreases with decrease in temperature hence the resistance.
Does a good conductor has a high resistance?
No, a good conductor has a low resistance.
What affects the resistance of an electric conductor?
The material from which the conductor is made, the length of the conductor, the diameter of the conductor and the temperature of the conductor are all things that impact its resistance.
What is the electrical resistance measured in?
Resistance is the opposition to the flow of electrons (i.e. electrical current) in a conducting material such as a metal wire or a pair of contacts in a switch. Every substance has a certain amount of resistance. Resistance is measured in ohms. If one volt can push 1 amp of current through a substance, it has a resistance of 1 ohm. Some materials, like copper and aluminum have fairly low resistance, and are therefore used as electrical conductors (wires). Another answer Conductor resistance means a material's opposition to the flow of current that a conductor has. Ideally, in a wire, this should be nothing, i.e. 0 ohms, but in reality all conductors have a certain amount of resistance. For example, 1000 feet of 14 AWG (the common wire size used for 15 amp branch circuits in residential wiring in North America) has about 2.5 ohms of resistance. Further answers Think of a conductor as a resistor/resistance of a certain very low value in series with whatever load it is feeding. Current flowing through the conductor(s) will result in a voltage drop and power loss, manifested as heating of the conductors. The "line loss" formula is one variation of the power formula and is P = I2 x R, which can be used for calculating the power loss in the conductors. Remember that any power line to a 120 volt device has 2 lengths of conductor going to it (hot and neutral return). Therefore the total conductor length is the length of the power cord or electrical cable times 2. To calculate the voltage drop across the conductor resistance for a given current, you have to determine the conductor's resistance and use Ohm's law. Calculating the resistance of a length of conductor can be done using tables readily available in textbooks or via a websearch, assuming copper conductors at 20 degrees Celcius. You need to know the size of the conductor (AWG size, for American wire gauge) and the length of the conductor.
Will increasing the conductor thickness increase resistance?
No. A thicker conductor will lower resistance.
What happens to resistance when length of conductor is doubled without affecting thickness of conductor?
Nothing. Resistivity is a physical characteristic of a material. It's not affected by its shape, etc.
