Question
Answer the following questions:
A low voltage supply from which one needs high currents must have very low internal resistance. Why?
Solution
According to the formula for maximum current drawn Imax= E/r
where, E is the Emf of source and,
r is the internal resistance.
Since, r and I have inverse dependence therefore, for maximum current, 'r' should be low.
where, E is the Emf of source and,
r is the internal resistance.
Since, r and I have inverse dependence therefore, for maximum current, 'r' should be low.
