Question

Two points P and Q have electric potential of (-20) volt and (-30) volt respectively. These two points are connected by a metallic wire. Find the direction of flow of electrons and the direction of electric current through the wire. Justify your answer.

Answer 1

Answer:

HERE IS THE ANSWER IN SIMPLE WORDS

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electric current always flows from higher potential to lower potential .

Here p has higher potential than q so current will flow from P to Q.

The rule will not change for positive or negative values of electric potential.

Explanation:

Answer 2

If two charged bodies are in contact, the charge starts flowing from one conductor to other. The electric condition, that determines the flow of charge from one conductor to other in contact, is the electric potential. Electric potential is comparable to level in case of water, the temperature in case of heat and pressure in the case of fluids. Earth is a conductor that can hold an infinite charge and can give infinite charge without changing its potential.

If two charged bodies are in contact, the charge starts flowing from one conductor to other. The electric condition, that determines the flow of charge from one conductor to other in contact, is the electric potential. Electric potential is comparable to level in case of water, the temperature in case of heat and pressure in the case of fluids. Earth is a conductor that can hold an infinite charge and can give infinite charge without changing its potential.Its potential is taken as zero potential. Thus the positively charged conductor has more positive potential than the earth. A negatively charged conductor has negative potential less than that of the earth.The electric potential difference between two points in an electric circuit is the work done in moving a unit positive charge from one point to the other.

If two charged bodies are in contact, the charge starts flowing from one conductor to other. The electric condition, that determines the flow of charge from one conductor to other in contact, is the electric potential. Electric potential is comparable to level in case of water, the temperature in case of heat and pressure in the case of fluids. Earth is a conductor that can hold an infinite charge and can give infinite charge without changing its potential.Its potential is taken as zero potential. Thus the positively charged conductor has more positive potential than the earth. A negatively charged conductor has negative potential less than that of the earth.The electric potential difference between two points in an electric circuit is the work done in moving a unit positive charge from one point to the other.When W joule of work is done in bringing the test charge Q coulomb from infinity to the point P then the electric potential V at the point P then, V= W/Q

If two charged bodies are in contact, the charge starts flowing from one conductor to other. The electric condition, that determines the flow of charge from one conductor to other in contact, is the electric potential. Electric potential is comparable to level in case of water, the temperature in case of heat and pressure in the case of fluids. Earth is a conductor that can hold an infinite charge and can give infinite charge without changing its potential.Its potential is taken as zero potential. Thus the positively charged conductor has more positive potential than the earth. A negatively charged conductor has negative potential less than that of the earth.The electric potential difference between two points in an electric circuit is the work done in moving a unit positive charge from one point to the other.When W joule of work is done in bringing the test charge Q coulomb from infinity to the point P then the electric potential V at the point P then, V= W/QThe work needed to move a charge Q from infinity to a point P where electric potential is V will be W=QV

If two charged bodies are in contact, the charge starts flowing from one conductor to other. The electric condition, that determines the flow of charge from one conductor to other in contact, is the electric potential. Electric potential is comparable to level in case of water, the temperature in case of heat and pressure in the case of fluids. Earth is a conductor that can hold an infinite charge and can give infinite charge without changing its potential.Its potential is taken as zero potential. Thus the positively charged conductor has more positive potential than the earth. A negatively charged conductor has negative potential less than that of the earth.The electric potential difference between two points in an electric circuit is the work done in moving a unit positive charge from one point to the other.When W joule of work is done in bringing the test charge Q coulomb from infinity to the point P then the electric potential V at the point P then, V= W/QThe work needed to move a charge Q from infinity to a point P where electric potential is V will be W=QVThe S.I unit of work is joule and that of the charge is coulomb.

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