Mitchtwitchita said:Homework Statement
A wire has a resistance of 0.010 ohms. What will the wire's resistance be if it is stretched to twice its original length without changing the volume?
Homework Equations
R = pL/A
The Attempt at a Solution
R = p(2L)/A
pL/A = R/2
=0.010/2
=0.0050 ohms
I think I this is wrong. Can anybody let me know? And, if so, can you please steer me in the right direction?
Mitchtwitchita said:So, if the length doubles, the area would have to be halved?
R = p(2L)/(1/2)A?
Mitchtwitchita said:R = (0.010) x 4 = 0.040?
Electric potential is the amount of electric potential energy per unit charge at a point in an electric field. It is measured in volts (V).
Electric potential is a scalar quantity that describes the potential energy of a unit charge at a specific point in an electric field. Electric potential energy, on the other hand, is the energy that a charged particle possesses due to its position in an electric field.
Electric potential is directly proportional to electric field strength. This means that as the electric field increases, the electric potential also increases, and vice versa.
Electric potential can be measured using a voltmeter, which is a device that measures the potential difference between two points in an electric field. The unit of measurement for electric potential is volts (V).
Electric current is the flow of electric charge through a conductor. It is measured in amperes (A) and is represented by the symbol I. The direction of electric current is opposite to the direction of electron flow.