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Ohm's Law involves three quantities:
-- voltage
-- current
-- resistance.
In order to find any one of them, you need to know the other two.
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∙ 12y ago
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How do you find resistance in a circuit?
That entirely depends on whether the resistances are in series or in parallel with each other. Ohm's law states that I=V/R. i.e. current = voltage/resistance. If you know the current and voltage you can find the resistance. You can use algebra to rearrange the formula for R and get that R= V/I. Resistance = voltage/current.
How to find resistance?
-- Apply a small, known voltage between the terminals of the device. -- Measure the current through the device with the voltage applied. -- Calculate the resistance of the device. It's (voltage) divided by (current).
How can you solve for resistance when given power?
Depends on the voltage. R equals V2/P . Or the current: R equals P/I2 .
If you multiply electric current times resistance what will it be in units?
That depends on what units you use as input. If you put in current in Amps and Resistance in Ohms you will get voltage in Volts.AnswerCurrent is measured in amperes. Resistance is measured in ohms, which is a special name given to a volt per ampere. Multiply amperes by (volts per ohm), and you are left with volts.
What is the relationship between the voltage and the current when the resistance is kept constant?
Ohm's Law: voltage = current * resistance. If resistance is a constant, then voltage is directly proportional to current.
How do you compute for voltage if current and resistance is given?
Voltage = Current * Resistance (Ohm's law)
How does resistance after current?
Assuming you are asking "How does resistance altercurrent?", then the answer is that, for a given value of potential difference, the current is inversely-proportional to the resistance. E.g. doubling the resistance will reduce the current by half.
When tempratere increase resistance increase and when resistance increase current decrease why?
That's what "resistance" is all about: reducing the current for a given voltage. In fact, you can DEFINE resistance as voltage divided by current.
What formula to find the emf and internal resistance for cell when given the current and the voltage?
I don't think you can do that, with the information provided.
How do i find the current?
Current= Volage/Resistance
How does current vary with the resistance in the circuit if the voltage is constant?
Inversely. As resistance increases, current dereases; given that the applied voltage is constant.
How do you find the current if you have the resistance but not the voltage?
The current will be zero if there is no voltage.
What is the mathematical equation to find electric current?
Ohm's law is the basic answer. Voltage = Current * Resistance is ohms law. In order to find current divide voltage by Resistance V/R=I where I is current.
How do you find the value of resistance?
By Ohm's Law, resistance is voltage divided by current.
When the bulb is the resistance what this tells about the resistance?
An incandescent bulb has a filament that has a resistance. The value of the resistance determines the current that will flow for a given supply voltage. The heat generated by the current flowing through the filament gives off light. As the resistance of the filament decreases the current increases and you get more light.
How does load current vary with the load resistance?
Their relationship is only dependent on the voltage lost across that resistor; voltage equals resistance times current, so increasing the current for a given voltage will require a decrease in the resistance, and vice versa.
If voltage equals resistance x current then?
Ohm's Law: Voltage equals Resistance times Current Given any two, you can figure out the other using simple algebra.
