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Does resistance depend on whether the current leaves or enters the negative terminal?
No, resistance of a wire depends only on its nature, length and area.(R=pL/A) . It is independent on whether the current leaves or enters the negative terminals. By the way, current always flows from negative terminal of battery to its positive terminal,conventional current is nothing. But this is beyond the scope of the question!
What else can I help you with?
In a 1.5V battery taking the negative terminal as 0.0V what is the electrical potential energy of an electron leaving the negative battery terminal?
Somebody is trying a trick question! The electron that comes out of the negative terminal has zero potential energy. With respect to the positive terminal it has -1.5V of electrical potential energy, and so does every other electron at 0.0V whether or not they came out of the battery.
Where does the electricity come out of a battery?
The electricity flows out the negative terminal, through the work load, and back into the positive terminal. It consists of negative electrons. In the early days of electrical experimenting, the scientists had to guess as to whether the electric flow was positive particles or negative particles. They had no way to test. They guessed positive. They were wrong. So we have inherited a definition of current as positive fluid going from positive terminal (outside the battery now) to negative terminal. We have stayed with that convention even though we know better today. It makes no difference at the circuit level. Positive particles flowing rightward has the same effect as negative particles flowing leftward. Of course, if you are designing batteries, you will want to know what flows which way.
What is the relationship between the voltage and the current when the resistance is kept constant?
Ohm's Law: voltage = current * resistance. If resistance is a constant, then voltage is directly proportional to current.
Why positive terminal has the higher potential?
Just arbitrary choice by Benjamin Franklin when he defined "conventional" electric polarities.The negative terminal has higher number of electrons, but Franklin knew nothing of electrons as they were not discovered until more than a century later.Mathematically it makes no difference whether the positive terminal or negative terminal has higher potential, as long as one is consistent one way or the other in the equations.
What is electricity current potential difference and resistance?
Voltage is the electrical pressure in a circuitAmperes (amps) are the measure of electrical current in a circuitOhms are the measurements of resistance in a circuitCurrent is essentially how fast electrons are moving in a circuitResistance is what impedes the electrical current, and can be found in the wire or various loads in a circuitHope this helps!
Can inserting a resistor in a circuit have an effect similar to an open circuit?
If the resistance is large enough, then there might not be enough voltage difference to allow much current. Since, Voltage = Current * Resistance, if resistance goes really large, and your voltage doesn't change, your current must decrease. An open circuit is where you do not have any current flowing, so whether no current verses very little current is the same is up to you.
What is the difference between negative and ground in electronic circuit?
you have not specified whether in AC system or A DC...but any ways general approach is A ground is the point which is specified as null potential point connected to body/chasis of equipment while Negative terminal is the low potential terminal used as reference for positive terminal and all currents will be returns thru the negative point to complete the circuit as per kirchoff's law. thanks.
How do you find resistance in a circuit?
That entirely depends on whether the resistances are in series or in parallel with each other. Ohm's law states that I=V/R. i.e. current = voltage/resistance. If you know the current and voltage you can find the resistance. You can use algebra to rearrange the formula for R and get that R= V/I. Resistance = voltage/current.
If you decrease resistance the current will increase or decrease?
It depends on whether the material is ohmic or non-ohmic.If it is ohmic, then it will obey Ohm's Law, and its resistance will remain constant if the current decreases.If, on the other hand, it is non-ohmic, it will not obey Ohm's Law and, if the temperature of the conductor falls (assuming it is a metallic conductor) due to the fall in current, then its resistance will fall too.
What direction does a circuit flow?
Conventional current flow positive to negative. Electron current flow negative to positive. With newer testing methods these days these statements are being revised as to whether that are completely correct as stated.
When ohmmeter is zero?
It means you have effectively no resistance to current flow. Whether this is good or not depends on whether you WANT resistance to current flow. If you're testing a length of wire, a cable, or something like that, having your ohmmeter read zero would be good. If you're testing a motor or something else that needs to have resistance to work, having your ohmmeter read zero is bad and is called a Short Circuit.
How many megohms need to run a motor?
A megohm is a unit of resistance to the flow of electricity. The requirements of motors are given in terms of voltage, current, whether they are direct or alternating current and, if alternating current, the number of phases.
