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What else can I help you with?
Does ohm's law also apply to the filament lamp?
No. For Ohm's Law to apply, the ratio of voltage to current must remain constant for variations in voltage. This simply doesn't happen with a tungsten filament. In fact, MOST materials don't obey Ohm's Law.
What is the resistivity of sand sandstone and shale?
The resistivity of sand can vary widely, but generally ranges from 1,000 to 10,000 ohm-meters. Sandstone typically has a resistivity of around 1 to 100 ohm-meters. Shale generally has a resistivity of 0.1 to 10 ohm-meters.
Basic unit of resistance?
The unit for measuring electrical resistance is called an Ohm. The Ohm is the unit used in the International System of Units (SI) and is named after George Ohm.ohms??The resistance of electricity is measured in units called ohms. A digital multimeter can be used to accurately measure ohms.The metric unit applied in measuring resistance is called the Ohm. Resistance is a scientific measure of how electron flow is opposed while flowing through a circuit.
Resistivity of copper at 20 degree celsius?
Resistivity allows us to compare different conductors' abilities to transmit electric current that is independent of the physical dimensions of the conductors.Resistivity is defined as 'the resistance of a unit length of a substance with a uniform cross-section'. In SI, the unit of measurement of resistivity is the ohm metre; in US customary units, it is expressed in ohm circular mil per foot.So, to finally answer your question, the resistivity of copper is 17.5x10-9 ohm metres at 20oC. To find the resistance of a copper conductor, you can then use the equation:resistance = resistivity x (area / length)Additional AnswerThe resistivity of copper depends on the temperature it which it is measured. At 25°C, it is about 17 nΩ.m, or 1.7 µΩ.cm.The resistance of a conductor is then p * L / A, where p is the above number.So for a wire with a length of 1 m (i.e. 100 cm), and a cross sectional area of 2 cm², the resistance is 17e-6 * 100 / 2 = 85 µΩ
When checking the resistance of a heating element the meter shows 10.5 ohm Also from each end of the element to the ground shows 5 ohm This means that the element is?
Short circuit to ground. The element is not safe to use and when properly wired, will cause the fuse to blow. Without the earth wire it will be dangerous and the chassis will be at mains potential! The element is intact, but the insulation has broken down to earth.
What is the units of temperature coefficient of resistance?
The unit of temperature coefficient of resistance is ohm per ohm per degree Celsius or say resistance per resistance per degree Celsius.
Who discovered the relationship between the electric current and resistance?
This relationship was discovered by Karl Georg Ohm.
What is he relationship between voltage current and resistance called?
That is called Ohm's Law.
What is the relationship between voltage current and resistance called?
It's called 'Ohm's Law'.
Where did the word ohm come from?
Named after Georg Simon Ohm (1789-1854) German physicist who discovered the relationship between voltage, current and resistance in an electrical circuit
What relationship does Ohm's law express?
Ohm's law gives the relationship between current, voltage, and resistance. The law states that I=V/R, where I is current, V is voltage, and R is resistance. Source: university digital fundamentals
What is the relationship between resistance and current in microscopic Ohm's law?
In microscopic Ohm's law, the relationship between resistance and current is that resistance is directly proportional to the current flowing through a material. This means that as resistance increases, the current flowing through the material decreases, and vice versa.
How does ohm's law relate to heat capacity?
Ohm's law describes the relationship between current, voltage, and resistance in electrical circuits. Heat capacity, on the other hand, measures the amount of heat energy required to change the temperature of a substance. These two concepts are not directly related to each other.
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.
How to convert ohm to degree Celsius?
It is not true that resistance has nothing to do with temperature. Electronic thermometers actually measure a resistance and convert it into a temperature. The temperature that the probe is measuring affects the particular metal (or metals, in the case of thermocouples) and the resistance of that metal varies accordingly. It's actually pretty simple chemistry. Anyone trying to do this conversion should be able to find a chart, specific to the type of probe. Post related questions if you're having trouble with this last step. (Replaced: You cant ! An ohm is a measurement of reistance - nothing to do with temperature !)
What is the relationship between voltage, current, and resistance in Ohm's Law?
Ohm's Law states that the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit is given by the equation V I R. This means that the voltage across a circuit is directly proportional to the current flowing through it and the resistance of the circuit.
According to Ohm's law if V is constant?
Ohm's Law describes the relationship between the voltage (potential difference) across the ends of some conductors and the resulting current through those conductors for variations in voltage. If the voltage is constant, then Ohm's Law is irrelevant.
