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Two identical resistors are connected in parallel and then wired in series to a 40-ohm's resistor If the total equivalent resistance is 55-ohm's. What is the value of R?
30 ohms.
The value of the resistor has 5 volts across it and has 20mA flowing through it?
The value of a resistor with 5 volts across it and 20 milliamperes of current flowing through it is 250 ohms. Ohm's Law: E = I R R = E/I
What is the difference between 100ohm and 100E?
It is the same, you can use ohm, µ, R or E to represent Ohm, like 2E2 or 2R2 = 2.2 Ohm and 2K2 = 2.2 Kilo Ohm also 2M2 will be 2.2 Mega Ohm.
A cell supplies a current of 0.9 A through a 2 Ohm resistor and 0.3 A through a 7 Ohm resistor What is the internal resistance of the cell?
We picture the cell as its Thevenin equivalent ... an ideal voltage source ' V ' in series with an internal resistance ' R '. You're asking for the value of ' R '.With the 2-ohm resistor: I = V / (R + 2) = 0.9 ===> V = 0.9 (R + 2)With the 7-ohm resistor: I = V / (R + 7) = 0.3 ===> V = 0.3 (R + 7)Since ' V ' is constant, 0.9 (R + 2) = 0.3 (R + 7)0.9R + 1.8 = 0.3R + 2.10.6R = 0.3R = 0.3 / 0.6 = 1/2 ohmWe can confirm this result either by substitution or by measuring the cell open-circuitly. It should be 2.25 volts.
According to george Simon ohm what is the relationship between current voltage and resistance and how can it be calculated?
Ohm's Law is stated as V=I*R, where V = voltage, I = current, R = resistance.
Calulate the resistance in a circuit in which a 9- volt poroduces 3 amperes?
By ohm's law, R = V/I. Given V = 9 V and I = 3 A. Plugging this we get, R = 9/3 = 3 ohm. Hence the resistance value in the circuit is 3 ohm.
How do you calculated the current shunt?
Write down the Ohm's law expression of "V = I * R" where "V" is the voltage drop across shunt resistor, "I" is the current flowing through shunt and "R" is the shunt resistance.Substitute value of voltage "V" and current "I" in the Ohm's law expression. For example, if voltage across shunt is 10 volts and current flowing through it is 1 ampere, then the expression is 10 = 100 * R.Divide the expression throughout by 100 to calculate the "R" value. Using a calculator, find the value of "R." From the example, the value of "R" will be 0.1 ohm, which is the value of shunt resistor.
Two identical resistors are connected in parallel and then wired in series to a 40-ohm's resistor If the total equivalent resistance is 55-ohm's. What is the value of R?
30 ohms.
What is the total resistance for 2.2 ohm 1.5 ohm 3.8 ohm 4.5 ohm?
If the loads are wired in series, add the three values to get the total R. If they are in parallel then the formula is 1/R = 1/R1 + 1/R2 + 1/R3 The total resistane when resistors are in parallel is ALWAYS LESS than the lowest individual value.
What is the impedance formula?
Z = SQR (R² + XL²)Where:Z = Impedance (ohm)R = Resistance (ohm)XL= Inductance Reactance (ohm)
What is the formula for the impedence?
Z = SQR (R² + XL²)Where:Z = Impedance (ohm)R = Resistance (ohm)XL= Inductance Reactance (ohm)
What is the value of R in si units?
The unit for resistance (R) in the International System of Units (SI) is the ohm (Ω).
What is the power dissipated in the Ohm resistor?
Power dissipated is always Volts times Amps. W= V*I because of ohm's law, V=I*R, you can substitute either the voltage or amperage with the other value; W= V^2/R or W= I^2*R.
What length of a copper wire mm in diameter has a resistance of 100 ohm's?
R = rho * L / pi r^2 So L = pi r^2 R / rho r = 0.400 X 10^-3 m R = 100 ohm rho = to be noted in a data book Plugging these known values we can compute the value of length in meter'
What is value of R56K resistor?
56000 ohm or 56 Kilo ohm
What is the ohm's triangle?
V/IXR This helps you to remember the three versions of Ohm's Law: V = I X R R = V/I I = V/R
Is it true or false that Ohm's law states that I R/V?
False. Ohm's law states that V I R, where V is voltage, I is current, and R is resistance.
