[" 3.A low voltage supply from which one needs high currents must have very low internal "],[" resistance.Why? "]

Answer the following questions: A low voltage supply from which one needs high currents must have very low internal resistance. Why?

Answer the following questions: (a) A steady current flows in a metallic conductor of non-uniform cross-section. Which of these quantities is constant along the conductor: current, current density electric field, drift speed ? (b) Is Ohm's law universally applicable for all cnducting elements ? If not, give examples of elements which do not obey Ohm's law. (c ) A low voltage suply from which one needs high currents must have very low internal resistance.Why (d) A high tension (HT) supply of say, 6kV must have a very large internal resistance, Why ?

Answer the following questions: (a) A steady current flows in a metallic conductor of non-uniform cross-section. Which of these quantities is constant along the conductor: current, current density electric field, drift speed ? (b) Is Ohm's law universally applicable for all cnducting elements ? If not, give examples of elements which do not obey Ohm's law. (c ) A low voltage suply from which one needs high currents must have very low internal resistance.Why (d) A high tension (HT) supply of say, 6kV must have a very large internal resistance, Why ?

(A): A voltage supply from which one needs high currents must have very low internal resistance. (R): The maximum current drawn from a cell is e/r only.

Answer the following questions : (a) A steady current flows in a metallic conductor of non-uniform cross-section. Explain which of these quantities is constant along the conductor : current, current density, electric field and drift speed ? (b) Is Ohm's law universally applicable for all conducting elements ? If not, give examples of elements which do not obey Ohm's law. (c) A low voltage supply from which one needs high currents must have low internal resistance, why ? (d) A high tension (HT) supply of say 6 kV must have a very large internal resistance. why ?

A : A low voltage supply from which high currents are to be withdraw , must have very low internal resistance . R : Maximum current drawn from a source is inversely proprtional to internal reisistance .

A : A low voltage supply from which high currents are to be withdraw , must have very low internal resistance . R : Maximum current drawn from a source is inversely proprtional to internal reisistance .

A high tension (HT) supply of, say, 6 kV must have a very large internal resistance.Why?