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What else can I help you with?
What should be the earth resistance of a good earth?
The lower the resistance you get in the grounding/earth system the better. In offshore a resistance from 1-2 ohm is a good earthing system. In Onshore a miximum of 10ohm is acceptable.
What is the formula for calculation of wire resistance?
R = resistance = rho * L / S rho is resisitivity in [Ohm m], it depends on the material (Copper: 2e-8 [Ohm m]) L is wire length [m] S is wire cross section [m] EDIT: for high frequencies, you may also wanto to take sink effect into account (~MHz)
What is the unit of resistance called?
ohm's
WHAT IS 500 OHM?
An Ohm is a measurement of resistance.
Which is bigger resistance 20 ohm or 200 ohm?
200 ohm
A 4 ohm resistance wire is doubled on it calculate the new resistance of the wire?
The resistance of a wire is directly proportional to its length, so doubling the length will also double the resistance. Therefore, doubling the 4 ohm resistance wire will result in a new resistance of 8 ohms.
How do you ohm out a wire to test its electrical resistance?
To ohm out a wire and test its electrical resistance, you need a multimeter. Set the multimeter to the resistance (ohms) setting. Connect the multimeter's probes to each end of the wire. The multimeter will display the resistance value in ohms, indicating the wire's electrical resistance.
How we get 0.5 ohm resistance for Earth pit?
Type your answer here... how to get ohm in earth pit
Why not use an ohm meter to measure the leakage in wire insulation?
An ohm meter measures resistance in a circuit, not leakage in wire insulation. To measure insulation resistance or leakage in wire insulation, you would typically use a megohmmeter or insulation resistance tester, which applies a higher voltage than an ohm meter to test the integrity of the insulation.
What is ideal value of earth resistance?
3000 ohm
What is the value of surface resistance for conductive flooring?
It's the Earth leakage resistance (Ohm)
What is PT 1000 sensors?
At 0 degrees Celsius, the resistance in the wire is 1000 Ohm.
What is the cause of resistance and how the resistance and how the resistance of a wire can be determined?
Electrical resistance can be determined by the equation that defines resistance - Ohm's Law. Just divide the voltage across a resistor, by the current passing through it.
What would happen to an eletrical current if the length of wire was decreased?
Lets say the resistance of copper wire is 1 ohm per meter and the wire is 10 meters long then resistance of wire is 10 ohms* If we then theoretically take the resistance of the wire at 10 ohm* and the voltage from the source at 10V then the current would be* I=V/R 10/10 or 1A If we shorten the wire to 9m then resistance of wire is 9 ohms so current if V does not change would be I=V/R 10/9 or 1.111111111111111111111A *This is without loss or other factors
What will happen to the current if double the length of the wire?
If you double the length of the wire while keeping the resistance constant, the current will halve because resistance is directly proportional to the length of the wire. This is described by Ohm's law (V = I * R), where V is voltage, I is current, and R is resistance.
What SI unit is used to measure resistance?
The units for resistance is Ohm (Ω).The standard unit of resistance is the ohm (with a lower case 'o'), named after the German physicist Georg Simon Ohm.
What should be the earth resistance of a good earth?
The lower the resistance you get in the grounding/earth system the better. In offshore a resistance from 1-2 ohm is a good earthing system. In Onshore a miximum of 10ohm is acceptable.
