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Ohm's law is a linear approximation for the voltage versus current across a conductor. This approximation works very well for good conductors (like metals) as well as poor conductors (like wood), but not very well for semi-conductors (like Silicon).
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoNo. Ohm's law is valid for any substance. Even semiconductors, and substances that we would call 'insulators'.
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Is Ohm's Law applicable in alternating current?
Yes, Ohms law is applicable in altering current.
Will maximum current flow through 0 ohms of resistance?
In theory, you would get infinite current. But, of course, in practise, this cannot happen, as any large current would cause severe damage to the source supplying that current, not to mention the conductors involved. Protection against such currents would be provided by a fuse or circuit breaker.
Is a miliohm 1000 ohms?
No, a miliohm is 0.001 ohms. A kiloohm is 1000 ohms.
What is the current in a parallel circuit which has two resistors (17.2 ohms and 22.4 ohms) and a power source of 6.0 volts?
By Ohm's Law, current is voltage divided by resistance, so a voltage of 6 volts across a resistance of 24 ohms will develop a current of 0.25 amperes.
What effect are there when resistance is increased in the size of the current?
Current is inversely proportional to resistance. If you double the resistance, you halve the current. Ohm's Law: Volts = Amps * Ohms Solve for Amps: Amps = Volts / Ohms
Mega test value for 240 volt marine system?
There should be at least 2 meg-ohms between the current carrying conductors and between current carrying conductors and ground.
Is Ohm's Law applicable in alternating current?
Yes, Ohms law is applicable in altering current.
Is ohms applicable to ac?
Yes.
Why ohms law applicable only linear resister?
because they have a proportional relation
What does the i stand for in ohms law?
Current
Will maximum current flow through 0 ohms of resistance?
In theory, you would get infinite current. But, of course, in practise, this cannot happen, as any large current would cause severe damage to the source supplying that current, not to mention the conductors involved. Protection against such currents would be provided by a fuse or circuit breaker.
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)
How do conductors obey the Ohm's law?
Very few conductors obey Ohm's Law, and its the rise in temperature of the conductor when current flows though it that prevents it from obeying Ohm's Law. Some alloys, such as constantan, obey Ohm's Law over a limited range because, over that range, changes in temperature don't affect their resistance. It's really time that we stopped teaching Ohm's Law, as it is not universal, and applies to very few conductors and hardly any electronic components!
Is a miliohm 1000 ohms?
No, a miliohm is 0.001 ohms. A kiloohm is 1000 ohms.
Resistance to current flow is measured in?
Ohms.
How many amperes of current will flow in a circuit if the voltage difference is 9 V and the resistance in the circuit is 3 Ω?
Ohm's Law: Current = Voltage divided by resistance 9 volts divided by 3 ohms = 3 amperes.
What is the current in a parallel circuit which has two resistors (17.2 ohms and 22.4 ohms) and a power source of 6.0 volts?
By Ohm's Law, current is voltage divided by resistance, so a voltage of 6 volts across a resistance of 24 ohms will develop a current of 0.25 amperes.
