Questions to answer in your report How can you determine if the resistors are Oh
ID: 1630160 • Letter: Q
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Questions to answer in your report How can you determine if the resistors are Ohmic? What would a circuit consisting of a voltage source and a single resistor look like? Why does the voltage source have to be a direct current (DC) source? If you repeat a voltage or current measurement, do you get the same value? If so, can you increase the precision of the voltmeter or ammeter? Why would this be preferred? If not how should you handle the uncertainty associated with the measurements? The current through the ammeters will be the same as the current in your loop. The ammeters have fuses that blow when the current through them exceeds 1.50 A. What does this tell you about the current in your loop? What should the voltage be in order to generate this current? If you put three different resistors in series, what is the theoretical effective series resistance? How can you experimentally determine the effective series resistance? If you put three different resistors in parallel, what is the theoretical effective parallel resistance? How can you experimentally determine the effective parallel resistance? For three different resistors in parallel, what is the current through each resistor? Does this agree with what you expect intuitively? How would you determine this theoretically? How can you connect six different resistors together to form a series-parallel circuit (a series-parallel circuit is one with some of the resistors placed in parallel to each other and the different groups placed in series in the circuit)? Is there more than one way to combine the resistors? What is the effective resistance of the series-parallel circuit? How can you experimentally determine the effective resistance?Explanation / Answer
1)
If the resistance is consistent over a large range of estimations of current and voltage, the resistor is referred to as an ohmic device.Ohmic resistors are those that obey Ohm's Law. Devices other than resistors also obey Ohm's Law and can also be called ohmic.
2)
When a resistor connected to a voltage source, the current is constant.device which can produce a continuous force to move the electrons (or, continuous voltage) through the wire connected into the two terminals of the device is called a Voltage Source.Direct Voltage causes the current to move only in one direction continuously.
3)
We get a different value if we repeat the voltage and current measurement.You cannot change the ammeter and voltmeter indicator output precision, what you can use instead is the measurement probe. The measurement probe is located on the Instrument toolbar. When you double-click the probe then select the "parameter" tab, there is an option to setup the output precision.
4)
Ammeters tend to influence the amount of current in the circuits they’re connected to. The ideal ammeter has zero internal resistance, so as to drop as little voltage as possible as electrons flow through it. Irrespective of the size of the high current fuse, the low current wiring is not being protected by it, and hence there is a fire risk.
5)
A series circuit is a circuit in which resistors are arranged in a chain, so the current has only one path to take. The current is the same through each resistor. The total resistance of the circuit is found by simply adding up the resistance values of the individual resistors:
Equivalent resistance of resistors in series : R = R1 + R2 + R3
6)
The total resistance of the circuit is found by simply adding up the resistance values of the individual resistors:
Equivalent resistance of resistors in Parallel : 1/R = 1/R1 + 1/R2 + 1/R3
7)
Parallel resistors do not each get the total current; they divide it (current is dependent on the value of each resistor and the number of total resistors in a circuit).
8)
The goal of series-parallel resistor circuit analysis is to be able to determine all voltage drops, currents, and power dissipations in a circuit.Reduce the original circuit to a single equivalent resistor, re-drawing the circuit in each step of reduction as simple series and simple parallel parts are reduced to single, equivalent resistors.
(R1,R2,R3 )in parallel ,(R4+R5+R6) in parallel and combination in series.
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