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Explain the advantages and disadvantages of connecting resistors in series in terms of currents and voltages?
Wiki User
∙ 11y ago
For an electrical device, such as a lamp for example, to operate at its rated power, it must be supplied with its rated voltage. If several such devices are to be connected to the same circuit, the only way to achieve this requirement is to connect the devices in parallel (because the same voltage appears across each branch of a parallel circuit). Furthermore, with parallel connections, if one device should fail (or simply get switched off), all the other devices will continue to operate normally. These are the two reasons why most practical circuits are parallel circuits.
Series circuits are less common but can be used for some lighting circuits (e.g. Christmas decorations) in which case the supply voltage is distributed equally across each of the lamps, which then have appropriately-rated voltages. For example, you may have twenty-four, 10-V lamps, connected in series across a 240-V supply.
Wiki User
∙ 11y ago
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Advantages of current transformer?
A CT allows:heavy currents to be measured using conventional ammeters, andelectrically-isolates the ammeters from high-voltage primary circuits.
How do you calculate the equivalent resistance of a circuit of the shape of a cube and a having a resistor of i kilo ohm in every branch?
Given twelve 1 KOhm resistors, connected in the shape of a cube, in order to determine the net resistance between opposite corners, first draw the cube in two dimensions. (Try this at each step before continuing, so you can understand the lesson as it unfolds.)There are three resistors leaving the initial vertex, and three resistors entering the final vertex. In between those six resistors, are six more resistors, each pair connected together on one end, and to two other resistors on the other end.If every resistor has the same value, then (by symmetry), the voltage on the ends of the first three resistors must be the same. Similarly, the voltage on the ends of the last three resistors must be the same.If two points in a circuit have the same voltage, then (for purposes of analysis) you can consider them to be shorted together. That short does not change the results, as there is no current flowing through that short.With the bottom ends of the first three resistors shorted, and with the top ends of the last three resistors shorted, the circuit degrades into three resistors in parallel, in series with six more resistors in parallel, in series with three more resistors in parallel.Three 1 KOhm resistors in parallel have a net resistance of 333 ohms. Six have a net resistance of 167 ohms. Two 333 ohm resistors and one 167 ohm resistor in series have a net resistance of 833 ohms, or 5/6 of 1 KOhms.Note: This technique does not work if the resistors are not all the same value. In that case, you would need to solve 12 equations in 12 unknowns, looking at the partial currents in each branch.
What is the current flow in a 12VDC circuit with two 24 ohm resistors in parallel?
In a parallel circuit, the same (supply) voltage will appear across each branch. So, in your example, 12 V will appear across each of the 24-ohm resistors. To find the current through each resistor, then, you simply divide the supply voltage by the value of that resistor. Since the supply current is the sum of the two branch currents, to find the supply current, you simply add together the currents passing through each resistor.
When resistors are connected in series in a circuit. what are the relationships between the voltage drops across the resistor and the currents through the resistors?
When resistors are connected in series in a circuit . the voltage drop across each resistor will be equal to its resistance, as V=IR, V is direct proportional to R. An A: The relationship is that the current will divide for each paths in a parallel circuit and the voltage drop across each will be the source voltage. In a series circuit the current will remain the same for each component but the voltage will divide to reflect each different component value. And the sum of all of the voltage drops will add to the voltage source
What is the function of a 180K resistor in hobby kit?
All resistors have the same function in a hobby kit, to cause a voltage drop in series circuits or reduce currents in parallel circuits. A value of 180k ohms is just going to do that by a lot.
The sum of currents across the resistors equals the currents through the source in which type of circuit?
In parallel circuit the current through the resistors are different in values depending upon the values of resistors. But the sum of the currents across all the resistors will be equal to the current through the sourcgsvg bdjasuhafyuhda
What are the advantage and disadvantages of heating effect of current?
Disadvantages of the heating effect of electric currents are: short circuits, house fires, and explosions. Advantages of the heating effect of electric currents are: electric light, toasting food, and keeping a room warm.
What protects circuits from dangerously large currents?
resistors circuit breakers fuses
What advantages of ocean currents?
advantage of ocean currents
What is the relationship between the currents between two resistors connected in series?
He was eating my pussie
Advantages of current transformer?
A CT allows:heavy currents to be measured using conventional ammeters, andelectrically-isolates the ammeters from high-voltage primary circuits.
What are the disadvantages of ocean currents?
they cause drownings and rip tides
What are Advantage and disadvantage of spst switch?
Advantages: Low cost Reliable Able to function with high voltages and currents Disadvantages The label could wear off after being used for a long time, create confusion for the user
What are the advantages of electromechanical switches?
Some of the advantages of electromechanical relays include the facts that no heat sink is required, the contacts can be either AC or DC, and the initial cost is low. Some of the disadvantages include the contacts becoming worn, resulting in a limited lifespan, and that they don't perform that well when it comes to switching high inrush currents.
There is a total of 500mA of current into five parallel resisters the currents through four of the resistors are 50mA 150mA25mA and 25mAand 100mA what is the current through the fifth resister?
150 mA is.
What are the disadvantages of current?
DC currents only go for one mile so you have to have a power station every mile.
What are the types of resistor?
There are many types of Resistors , which can be classified in many ways. The fundamental classification is based on the Power Handling Rating , which breaks up into Power Resistors & Low power resistors. Power Resistors can handle large Powers & Currents. These are generally made of High Resistance alloys like Nichrome , which are used in heaters , toasters etc. Some types of small power resistors are also used in electronic circuits which handle large currents like in power supplies etc. Infact the incandescent lamp is a special form of power resistor. Low power resistors are usually used in electronic circuitry , which again have different power capacity ratings usually less than 1watt to small surface mounted devices which are rated for few tenths of milliwatts. Another important classification is based on the stability of the resistor material & hence its ohmic values. Such resistors are used for precision applications like measuring circuits , meters etc. Then there are specialised forms of clasification depending on application e.g Positive & Negative Temeprature coefficient resistors ( Thermistors ) are used for temperature sensing , Voltage Dependent resistors are used in protection circuitry, High Voltage resistors are used where requires for high voltage ( kilovolts ) electronic circuitry like X Ray , Laser & Electrostatic Power supplies.
