Q-Define electric current and what are its units?
ans-The amount of charge flowing through an area in per unit time is called an electric current.Its S.I. unit is ampere.
Q-Define electric potential and potential difference?
ans-The electric potential at a point is the amount of electric potential energy that a charge would have when located at a point.
Potential difference is the amount of work done to move a unit charge.
Q-State Ohm's law.Give its mathematical form?Draw potential v/s
current graph?
ans-Ohm's law states that the potential difference is directly proportional to electric current at a particular temperature.
V directly proportional to I
When sign of proportionality is removed constant of resistance is added.
v=IR
R=V/I
THIS GRAPH WOULD BE UNIFORM AND WILL NOT START FROM 0 BECAUSE V IS GREATER THAN I.
Q-Give unit of resistance of a conductor?
ans- The unit of resistance of conductor is ohm.
Q-Name the instruments for measuring-
1-electric current?- AMMETER
2-potential difference?-VOLTMETER
ans-The amount of charge flowing through an area in per unit time is called an electric current.Its S.I. unit is ampere.
Q-Define electric potential and potential difference?
ans-The electric potential at a point is the amount of electric potential energy that a charge would have when located at a point.
Potential difference is the amount of work done to move a unit charge.
Q-State Ohm's law.Give its mathematical form?Draw potential v/s
current graph?
ans-Ohm's law states that the potential difference is directly proportional to electric current at a particular temperature.
V directly proportional to I
When sign of proportionality is removed constant of resistance is added.
v=IR
R=V/I
THIS GRAPH WOULD BE UNIFORM AND WILL NOT START FROM 0 BECAUSE V IS GREATER THAN I.
Q-Give unit of resistance of a conductor?
ans- The unit of resistance of conductor is ohm.
Q-Name the instruments for measuring-
1-electric current?- AMMETER
2-potential difference?-VOLTMETER
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