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Can ohm's law be used to determine current or resistance in a current?
Wiki User
∙ 11y ago
yeah of-course..... for DC circuit holds good...:)
Another AnswerYou can use the ratio of voltage to current to determine the resistance of a conductor or other device for that particular ratio. But you must remember that Ohm's Law is not a universal law, and only applies to linear or ohmic devices.
Wiki User
∙ 11y ago
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What is the ohm unit used to measure?
Ohms measure electrical resistance. The resistance in ohms is the voltage divided by the current.
What are watts amps and ohms?
ohms is a measure of resistance(R) in a circuit. Watts is a measure of the power(P), in this case lets assume it is the power used by the resistive element (lamp, heater etc). Power(watts)=Current(Amps)x Current(amps) x Resistance(ohms) or Resistance (ohms)=Power(W)/(current x current)
What are ohms used for?
Ohms are used to measure electric resistance.
What is the resistance of an electric lamp that takes in a current of 0.40 ampere when 110 volts is applied?
Ohm's Law: Resistance is voltage divided by current 110 volts divided by 0.4 amperes is 275 ohms.
What area of science uses amps and ohms?
Amps, or amperes, are a measure of electrical current; ohms are a measure of electrical resistance. Both are widely used in physics.
What is the standard unit for resistance?
ohm
How do you wire a 2V LED to run on 12V?
Light Emitting Diodes (LED) solid state devices are current dependant. LED have ratings for the max current allowed to the LED device. A typical current allowed to a LED is 20ma. Ohms Law is used to determine the resistance required to limit the current to your desired current. The formula is used in this manner: E=12VOLTS the desired current is I = 20ma. R = E/I = 600 ohms. Where E=2 volts dc and I=20ma R= E/I = 100 Ohms.
What is 1.2kohm resistor?
Your question is incomplete. What you meant to say is "What is the voltage drop of a 1.2K Ohm resistance?" (an Ohm is a unit of measurement, a resistor or resistance is measured in ohms.) The answer is, it depends on the current flowing through the circuit. Use the formula V=IR where V is the voltage, I is the current in amps, and R is the resistance in ohms.
What are voltage current and resistance?
They are the three components that are used in Ohms law. Knowing any two will lead to the calculation of the third.
When a coffeemaker has a resistance of 10 ohms and draws a current of 11A what power does it use?
The power used, assuming Unity Power Factor (resistive load), is the product of resistance and the square of the current -- or 1210 Watts.
How much current flows in 10 ohms when connected to 12 volts?
Ohms are the unit of resistance you find in Ohms LAw which says Volts = Amps x Ohms. You can get a voltage drop across a resistance, but would have to know what current is being used and you would have a potentiometer in effect. You are not "converting 12V" to 10V, your are essentially loosing two volts through a resistor.
What is described as a device with specific resistance and is used to control current?
A current shunt is a device with a very low resistance, usually around one ohm. The exact resistance of the shunt is printed on the device for reference, and it is often slightly higher or lower than nominal, for example a 1 ohm shunt may actually have a resistance of .99986 ohms or 1.0002 ohms. A current shunt is not used to control current, however, so I do not know if this is the device you are asking about. It is used to measure current by using a precision voltmeter to measure the voltage drop across the shunt, and then using ohms law to calculate the current. Voltage (Volts) divided by Resistance (Ohms) equals Current (Amps). When the shunt is placed so that it interrupts a circuit, (placed in series), the current flowing in the circuit can be accurately measured with the shunt, without changing the values in the circuit enough to affect it. Many shunts of this type have a large heavy duty resistor that does not overheat easily. The shunt should also have a max current rating listed on it.
