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You take the wire(s) that are in the circuit and place it on on a compass. Hold the compass still and the needle in the compass will move. However far that the needle is turned will detrmine how much resistance is in the circuit. (You know you have done this correctly if the needle in the compass spins counter clockwise.) Hope this helps you out :)
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoThe sum of all the resistances, which is usually a meaningless number.
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Which of the statements concerning parallel circuits is NOT true?
D. The total resistance is equal to the lowest resistance in the circuit
What is the opposition of current flow measured in?
The opposition of current flow is measured in ohms. For DC circuits it is resistance and for AC circuits it is impedance.
How does voltage and resistance behave in a series and a parallel circuit?
The current through each resistor is equal to the voltage across it divided by its resistance for series and parallel circuits.
What is fault resistance?
Not all 'short circuits' are 'dead-shorts' -i.e. the resistance between the two conductors (or a conductor and earth) is not necessarily zero ohms -especially when the insulation between them has not completely broken down. The actual resistance is called the 'fault resistance'.
When one load is removed from a parallel circuit the total resistance decreases?
No, the total resistance increases.
Which of the statements concerning parallel circuits is NOT true?
D. The total resistance is equal to the lowest resistance in the circuit
There are three sources of resistance in a parallel circuit. two of them are rated at 20 ohms the other at 10 ohms. what is the circuits total resistance?
5 ohms
Can you use resistance in place of diode in clipping circuits?
no we not use resistance in place of diode.
What are the multiple resistance circuits?
a circuit with many resistances.
What is the equivalent resistance through the enire circuit of 90 volts?
Not enough information. In the case of simple circuits, usually you would add resistances that are in series, and use a slightly more complicated formula for resistance that are in parallel. You CANNOT determine an equivalent resistance known only the voltage. However, if you know the total current, you can divide the voltage by the total current to get the equivalent resistance.
Why dont series circuits shine as bright as parallel circuits?
By connecting components in series, you are increasing the equivalent resistance (known as thevenin resistance) of the circuit. Power is equivalent to Voltage^2 / Resistance. Therefore, by increase the resistance, you are decreasing the amount of power provided by the source.
Why in DC it is called as Resistance and impedance in AC Circuits?
Resistance applies to both d.c. and a.c. circuits, and is determined by the resistivity, length, and cross-sectional area of a conductor.In d.c. circuits, resistance is the only opposition to the passage of current. However, in a.c. circuits, the flow of current is opposed, not only by resistance, but also by reactance. Reactance is caused by a circuit's inductance or capacitance, or both, and varies with the frequency of the supply. Like resistance, reactance is also measured in ohms.So, in a.c. circuits, the combination of resistance and reactance is called 'impedance'.Impedance is not the algebraic sum of resistance and reactance, but the vectorial sum. So if, for example, an a.c. circuit had a resistance of 3 ohms and a reactance of 4 ohms, the impedance would be 5 ohms, not 7 ohms.
Does sugar create electrical resistance?
Sugar is not used in electrical circuits.
What is the opposition of current flow measured in?
The opposition of current flow is measured in ohms. For DC circuits it is resistance and for AC circuits it is impedance.
Use Ohm's Law and explain how 2 circuits have the same current but different resistance?
As we know V=IR, by changing the voltages in the two different circuits, we can maintain the same current even we have different resistance.
What is loop resistance?
It depends somewhat on context. A dc circuit consists of of a flow of current to the load and back to the source. This is often called the loop. The loop resistance would be the total resistance measured in ohms. In most power circuits the above would hold true in an ac circuit as well.
What is advantage of a parallel circuit?
Parallel circuits have a higher current and a lower resistance.
