State one condition for maximum current to be drawn from the cell?
1 Answer
For maximum current to be drawn from a cell, the external resistance in the circuit should be zero.
This condition is also known as a short circuit.
Explanation:
The current (I) drawn from a cell is given by the formula:
I = E / (R + r)
Where:
E is the EMF (electromotive force) of the cell.
R is the external resistance (the load).
* r is the internal resistance of the cell.
To maximize the current (I), the denominator (R + r) must be minimized. Since R (external resistance) cannot be negative, its minimum possible value is 0. When R = 0, the current is at its maximum value, I_max = E / r.