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What else can I help you with?
Suppose a wire of resistance R could be stretched uniformly until it was twice its original length. What would happen to its resistance?
Current tends to travel on the surface of the wire. As you decrease the cross-sectional area of a wire the resistance increases. That is why larger wires are rated for higher currents.
How can you tell the wires of a toaster have high Resistance?
They get red-hot, but the fuse does not blow, nor the breaker trip. Lower resistance wire fed with 120 volts might draw enormous current and get red hot, but the fuse would blow, or the breaker trip. Of course, You could always whip out your trusty multimeter and measure the resistance (allowing for change with temperature rise of course). Or, you could measure the voltage, then the current, then divide voltage by current to get resistance (at operating temperature).
How does temperature affect resistance of a wire?
If you are asking if a hot wire has a greater resistance than a cold wire then the answer I would say is yes. Cold wires have always had less resistance than hot wires
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.
How might ambient temperature may affect the resistance values you would measure in a circuit?
Ambient temperature might affect the readings of the resistance value you would measure because the resistance of some materials changes with the temperature.
What resistance of a connecting wire is less than the resistance of a resistor?
The resistance of a connecting wire that is less than the resistance of a resistor would depend on the materials and dimensions of the wire and resistor. Generally, most connecting wires have very low resistance compared to resistors. Copper wires, for example, have low resistance and are commonly used for connecting circuits.
If wires are made from the same material and are the same length which would have greater resistance?
The wire with smaller diameter (thinner wire) will have greater resistance. This is because resistance is inversely proportional to the cross-sectional area of the wire. Thinner wires have smaller cross-sectional area, leading to greater resistance.
Is length used to determine a wire's resistance?
Sort of.Resistance of a wire is usually given as "so many" oms per foot (or meter, etc).To actually determine a wire's resistance you would need a sensitive ohmmeter,OR a known voltage source and an ammeter.
What experiments suggest that wires have essentially zero resistance?
Think of this as two scenarios. First, we have one blub, one battery, and two wires in a closed circuit, and the bulb lights up. Next, think about what would happen if we added a couple more wires to the circuit. The bulb would still light up, just as brightly, meaning that the new wires are not increasing the amount of resistance. This means that the wires are not slowing down the flow of charges.
What type of sensor would utilize 2 wires and how would it be tested with a dvom?
A VRS sensor and you can measure it with a DVOM on A/C Votlage by probing both wires and cranking the car.
How do you know the voltage drop of wire?
Voltage = Current x Resistance. To calculate the voltage drop of a piece of wire, you would have to know the current flowing in the circuit and the resistance of the wire. The resistance of wire depends on the material it is made of, the length, and the cross sectional area (also called gauge or AWG). Short thick wires have less resistance than long thin wires. You can look up the resistance of the wire on the Internet, and you can measure the current flowing by connecting an ammeter in series with the circuit. Multiply those two numbers and you will have closely approximated the voltage drop across the wire.
Why would you not get a spark from the ignition wires on a 1995 Mazda mx3?
Because your distributer is bad or has too high of a resistance value
