In which combination of resistance current is maximum?
In which combination of resistance current is maximum?
Answer: In series combination of resistance, resistors aid up and opposes the current. In parallel combination, equivalent resistance will be less therefore current drawn will be maximum.
Which combination of resistors increase the current in a circuit?
Answers: As more and more resistors are added in parallel to a circuit, the equivalent resistance of the circuit decreases and the total current of the circuit increases. Adding more resistors in parallel is equivalent to providing more branches through which charge can flow.
Which connection gives maximum current?
If the external resistance is much higher than the total internal resistance, then the cell should be connected in series to get maximum current.
How do you find the maximum current through a resistor?
The maximum power drawn by the chip through the resistor (by equation #2) will be 5 * 5 / 10000 = 0.0025 W, or 2.5 mW….Depending on how you’re using the resistor, there are three equations that are useful to calculate the power dissipation:
- Watts = volts * amps.
- Watts = volts * volts / ohms.
- Watts = amps * amps * ohms.
Which combination of resistors gives minimum value of resistance?
When resistors are connected in parallel, more current flows from the source than would flow for any of them individually, so the total resistance is lower.
What is the maximum and minimum resistance?
The minimum resistance would be all the devices in parallel. THe maximum would be all the devices in series.
Which combination of resistors decrease the current in a circuit?
Answer:Parallel resistors.
What is series resistor combination?
When two or more resistors are connected end to end consecutively, they are said to be connected in series combination. The combined resistance of any number of resistances connected in series is equal to the sum of the individual resistances.
How cells are combined find expression for the maximum current in each case of combination?
Maximum current can be drawn from series combination of cells if external resistance is very large as compared to equivalent internal resistance. So current I = Σ E i R + Σ r i .
Under what condition maximum current is obtained from parallel grouping of cells?
When external resistance is much smaller than the internal resistance, the cells should be connected in parallel to get maximum current.
How do you find the maximum current value?
In other words the maximum current allowed is the square root of the ratio between the resistor’s power rating and worst case resistance. So for example if we have a 1k ¼Watt 5% tolerance resistor then the maximum resistance in tolerance would be 1050 and so the maximum current is: which is 15mA.
How do you find the maximum and minimum current?
Use V/R to get I, and min I = V/ max R.
How does the size of a copper wire affect current?
The larger the copper wire size the less resistance and hence the more current it can carry without over-heating. Resistance impedes to the flow of electrons and causes a voltage drop across the wire.
What is the combination of resistances in a circuit?
Sometimes to get a desired value of resistance in a circuit, we combine two or more resistances together. There are two types of combinations of resistances namely, the series combination of resistances and parallel combination of resistances.
What is the total resistance across the voltage in the circuit?
Consider two resistors, namely R1 and R2, connected in parallel combination. The total resistance across the voltage is given by 1/R = 1/R1+1/R2.
Does current flow through a series combination of resistances?
Series Combination of Resistances In a series combination of resistances, there is only one path for the current to flow. So, the current flowing through all the individual resistances will be the same. But the voltage across all the resistances may be different.