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What else can I help you with?
Does current change in a circuit having bulb in series with a resistance?
Absolutely the more Resistance is put in series the less current Will flow.
Why you need resistance in series with led?
limit current and avoid having it explode
Why should you never measure resistance in a circuit carrying a current?
Ideally true, but seldom so. The vast majority of resistance meters use current to measure resistance and just use V=IR to give R - the resistor is in a circuit carrying current. The only method that does not have a current through the resistance, it actually relies on the fact, is a Wheatstone bridge. The most important reason for not having a current is that you will be using a current in most cases, to meaure the resistance. Current from another source will screw the reading. Also, with a current flowing, you are not measuring resistance - you are measuring impedance - a combination of inductance and resistance.
How an object opposes an electrical current passing through it?
An object can oppose an electrical current passing through it by having resistance. This resistance limits the flow of electrons, causing a drop in voltage and generating heat. Materials with high resistance, such as insulators like rubber or glass, will strongly oppose the flow of current.
What happens when you have low resistance?
Having low resistance means that there is an easier flow of electric current through a circuit. This can lead to higher current levels which could potentially damage the components in the circuit or cause overheating. It can also result in a decrease in voltage across the circuit.
Is fet having negative resistance?
JFET BFW20 shows negetive resistance when gate is grounded (VGS = 0) and vary Drain to source voltage and measure Drain current. As the voltage is increased, the drain current decreases. Prof.S.Lakshminarayana.
What voltage would be necessary to produce a current of 3A if the resistance of the curcuit were 50 OHMS?
The voltage is gained by multiplying the current and resistance together, i.e.. 50 x 500 = 25000 Imagine the three as a triangle with the voltage at the top, and the current and resistance at the bottom- V . ---- . I x R The voltage divided by the current is the resistance and the voltage divided by the resistance is the current. Therefore the current times the resistance is equal to the voltage. Having any two of these figures allows you to find the third.
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.
Is high electrical resistance good or bad?
electrical resistance is when something resists the electrical current .. eg rubber hope it helped
Is A superconductor is A conductor having zero resistance?
Yes, a superconductor is a material that can conduct electricity without any resistance at very low temperatures. This means that once a current is applied, it can flow indefinitely without any loss of energy due to resistance.
Three resistances each of 4 ohm are connected to form a triangle the resistance between any two terminals is?
That's like having a series combination of 4 + 4 ohms, in parallel with another resistance of 4 ohms. Calculate the series resistance, then use the parallel formula to combine it with the third resistance.
What will happen to resistance If amperage goes down and voltage remains the same?
The correct term is 'current', not 'amperage'. The answer is that nothing will happen to the resistance. Having said that, changing the resistance will cause current to change for a fixed value of voltage.Resistance is determined by the length, cross-sectional area, and resistivity of a material. Resistivity is affected by temperature, so resistance is also therefore indirectly affected by temperature. Only by changing one of these variables will the resistance change.Since the ratio of voltage to current will tell us what the resistance of a circuit happens to be (it's not affected by that ratio) for a particular ratio, the ratio will increase (as per your question) if the resistance increases. But it's not the ratio that's affecting resistance, its the resistance affecting the ratio!
