A student measures the terminal potential difference V of a cell (emf and internal resistance r) as a function of current I flowing through it, and draws V versus I graph. The slope and intercept of the graph respectively are

Step-by-step solution

The terminal potential difference V of a cell with emf and internal resistance r when a current I is drawn from it is given by the equation: V = - Ir Rearranging this equation to match the linear form y = mx + c , where y = V and x = I , we get: V = -rI + Comparing this with the equation of a straight line V = mI + c , the slope m is -r and the y-intercept c is . Answer: -r,