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The experiments of Georg Ohm set the foundation for this law, which is also known as Ohm's Law.

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โˆ™ 2007-08-05 23:11:22
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Q: Who discovered that 'p equals resistance times area divided by length' known as the Law of Material Resistance?
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In ohms law resistance is equal to voltage divided by what?

Resistance is a measure of how well current flows through the material. As such, voltage divided by current in amps results in resistance

Which conditions make resistance small?

The resistance of a wire is the length divided by the cross-section area and the conductivity of the material. So for small resistance you need a wire with short length, large cross-section area (diameter) and a material with high conductivity like copper.

What does voltage divided by current equal?

Ohm so correctly said: Voltage divided by current equals resistance. Voltage divided by current will tell you the value of a circuit's resistance. But resistance is not affected by either voltage or current. It is determined by the length, cross-sectional area, and resistivity (type of conducting material) of the conductor. Resistivity is, in turn, affected by temperature. So voltage divided by current tells you what the resistance happens to be - changes in voltage or current do not affect resistance.

How do you find the current if you have voltage and resistance?

Voltage = Current x Resistance giving us Current = Voltage / Resistance i.e. Voltage divided by resistance

How do you find the value of resistance?

By Ohm's Law, resistance is voltage divided by current.

What are the mathamatical relationships in Ohm's Law in AC circuits?

Ohm's Law Voltage = Current x Resistance Current = Voltage divided by Resistance Resistance = Voltage divided by Current

Which is a better conductor between a short wire and long wire?

Double the length is double the resistance. Resistance of a wire is the resistivity of the material, times the length, divided by the cross-section area.

What is ohm's law and write three forms of ohm's law in a equation?

Ohm's law relates voltage, current, and resistance. Voltage is current times resistance Current is voltage divided by resistance Resistance is voltage divided by current

What happens to a current when the resistance increases?

Ohm's Law: Current = Voltage divided by Resistance, so, if you increase resistance, then current decreases.

What does current divided by resistance equal?

Ohm's Law Voltage = Current x Resistance

Voltage muiltiplied by resistance measures to current?

No. Voltage divided by resistance is equal to current.

Why resistance is infinite in opencircuit?

Because the current is zero and the resistance is voltage divided by current.

Explain the relations between power and resistance?

Power is inversely proportional to resistance. Ohm's law: Current is voltage divided by resistance Power law: Power is voltage times current, therefore power is voltage squared divided by resistance.

What is voltage divided by current?


What happens to the current in a circuit if the resistance is increased?

If resistance is increased, current decreases. Ohm's Law: current equals voltage divided by resistance.

When resistance is in a circuit what happens to the current?

When you add resistance to a circuit, current goes down. Ohm's Law: current = voltage divided by resistance.

Compute resistance for a circuit with resistance of 10 us?

This question makes no sense. You are asking for resistance and then saying the resistance is 10 us. "US" is not a measure of resistance. The measure is called Ohms. Ohm's Law states that Voltage = Current x Resistance Hence Resistance = Volts divided by Amps.

How is current related to resistance in a circuit?

Ohm's law: voltage is current times resistance. Restating this; current is voltage divided by resistance, so increasing resistance would decrease current.

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.

True or false current is the voltage multiplied by the resistance?

False. Current is voltage divided by resistance.

What is the equation of resistance?

Ohm's Law: Resistance in ohms is voltage in volts divided by current in amperes.

Equation for resistance in a circuit?

Ohm's Law Resistance = Voltage divided by Current R = V/ I

How can the diameter of wire affect the resistance?

Basic: The larger the diameter the less resistance.Deep:R = p (L / A)The resistance is proportional to the length of the wire divided by its cross-sectional area. p is the resistivity of the material in question and varies greatly. Since area (assuming a circular wire) is A = pi * r2 the larger the diameter of the wire the lower its resistance will be.AnswerResistance is inversely proportional to the square of the diameter. So, if you double the diameter, you will quarter the resistance. If you halve the diameter, you will quadruple the resistance.

How many amps is 480V?

I need to know the resistance to figure out the current Voltage = Current X Resistance Your answer will be: 480V divided by your total resistance = Amps

If you know the voltage applied to a resistor and the value of the resistor how would you determine the power dissipated in the resistor.?

Given voltage and resistance, power is voltage squared divided by resistance. Ohm's law: Current is voltage divided by resistance Power law: Power is voltage times current, or voltage squared divided by resistance