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The end from which you go through less total resistance
to get to the positive terminal of the power supply.
Also it doesn't matter which way round you put it in circuit as its not like a polarized capacitor, it has no polarity.
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoElectrons will exit the resistor on the more positive end (and vice-versa).
Resistors do not provide voltage (EMF), nor cause current. Other circuit components must cause current flow through the resistor in order to have a voltage drop across it. Otherwise, we cannot answer this question.
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What is an axial lead resistor?
It's a resistor where the leads (wires) are axial (they come in at the center of each end of the resistor).
Why do electrons move the negative end of the tube to the positive end?
Why do electrons move the negative end of the tube to the positive end
When a voltage is applied to a conductor free electrons?
... drift toward the more positive end of the conductor.
Which end acts positive?
hydrogen acts positive
What law is used to find the polarity of a circuit?
It is possible that Kirchoff's law will answer this question. But why make it hard? It is customary to find the polarity of a circuit by simple inspection. Let's do a basic circuit and see how it works. Draw a square. Put a battery in the left side, and put the positive terminal down and the negative terminal up. Put a resistor in the right side. Two components - a simple series circuit. The battery will be "sending out" electrons from the negative terminal (the top one), and it will be "collecting them in" at the positive terminal (the bottom one). Put a "-" by the top of the battery to label that terminal. Now put a "+" by the bottom terminal. You've specified the polarities. Anyone looking at the circuit now can "find the polarity" of the circuit by inspection. Let's go one step farther. The electrons will be flowing out the top of the battery, and over and down through our resistor. Then they'll flow out the bottom of the resistor and across and into the bottom of the battery. Very simple, very easy. Now focus on this. The polarity of the voltage drop across the resistor is negative on the top and positive on the bottom. The end of the resistor into which current flows is said to be the negative end of the component, and the end out of which the electrons flow is said to be the positive end. Is this clear? Electrons flow out the negative terminal of a battery, and electrons flow into the negative end of our resistor. Be super clear about this. That's the way voltages are labeled in a circuit diagram. (The resistor "drops" voltage, while the battery represents a voltage "rise" in circuits.) For our circuit, the voltage drop across the resistor, which can be though of as the measure of voltage across the resistor, is negative on top and positive on the bottom. If you were going to measure the voltage drop across the resistor, the black meter lead would be on top of that resistor and the red lead would be on the bottom. If anyone encounters the circuit, the polarity will be obvious by inspection. We must be given a voltage somewhere, or we must be given a direction of current flow so we can make our inspection and determine polarity. If we were given nothing about our circuit except the direction of current flow, we'd know the rest by inspection. Take the simple circuit we made and take off all references to polarity. Now draw an arrow parallel to the top line of the circuit, and make it point to the right. If that arrow represents the direction of current flow, it would be telling us current was flowing clockwise around our square circuit. The polarities of all the other components (there are only two) would then be known. We would know by simply looking at the circuit what was happening, know by inspection. [This answer has a couple of simplifications, but not where it makes any difference. The answer was designed to supply fundamental knowledge or introductory information. It is unnecessary to say, for instance, that modern digital multimeters (DMMs) will measure voltage no matter what lead is placed where - the only difference being whether on not the "minus" sign appears on the DMM's display. Save that for later. We're keeping this simple.]
How do you connect and measure voltage using a voltmeter?
with a voltomiter
What is an axial lead resistor?
It's a resistor where the leads (wires) are axial (they come in at the center of each end of the resistor).
Which is the Direction of the current in resistor?
A resistor is bi-directional meaning current can flow in either direction. Current flows from positive to negative.
Does resistance have positive and negative ends?
No. A resistor's electrical characteristics are bidirectional.
What are the colours of the positive and the negative terminals of the rheostat?
A rheostat is simply a variable resistor used to control current. It does not have a positive or a negative terminal.
How do you tell the positive from the negative on a led?
Most LEDs have one lead longer than the other, or a flat side on the rim of the base, to indicate polarity. An LED that has neither of these must be marked in some other way. The only way to identify the polarity of an unmarked LED is to test it. A common AA or C battery in series with a small resistor of 50-100 ohms will do the job. The LED lights when the positive end of the battery ... possibly through the resistor ... goes to the positive end of the LED. (There is no harm to the LED when the battery is connected backwards and the LED doesn't light.)
Do potentiometers have polarity?
no there is no consideration of positive or negative legs in case of resistor.
What component that makes it more difficult for current to flow?
IF there is a Resistor
What is the definition of polar head?
The molecule can have an overall neutral charge, but one end is more negative and the other end is more positive. The negative end is the Polar head.
Does the positive end of a battery go to the positive or negative end of the terminal?
The positive end of a battery goes to the positive end of the terminal. In retro spec, the negative end of a battery goes to the negative end of the terminal.
What is the lifespan of a resistor?
A resistor doesn't deteriorate with age, and has no particular 'life-span', as long as it's used properly. -- A resistor in a box on the shelf, or in a circuit where it stays cool, will last indefinitely. -- A resistor in a circuit where it's forced to dissipate enough power to make it hot may change its resistance value permanently, but will continue to operate. -- A resistor in a circuit where it's forced to dissipate even more than that, to a ridiculous extreme, may melt or explode. When that happens, it's the end of the resistor's life-span. But it wasn't the resistor's fault.
Does a magnet repel its same type?
Positive end to positive end = repel Negative end to negative end = repel Negative end to positive end = attract
