A battery has an emf of epsilon = 14 V, an internal resistance r = 13 Ohm, and i

Question

A battery has an emf of epsilon = 14 V, an internal resistance r = 13 Ohm, and is connected to a resistor of R = 65 Ohm. Express the current I through epsilon, r and R. Expression: I_____ Select from the variables below to write your expression. Note that all variables may not be required, alpha, beta, epsilon, theta, d, g, h, i, j, k, m, P, r, R, t Calculate the numerical value of I in A. Numeric: A numeric value is expected and not an expression. I = _____ Express the terminal voltage Delta V through I and R. Expression: Delta V = _____ Select from the variables below to write your expression. Note that all variables may not be required, alpha, beta, epsilon, pi, theta, d, g, h, I, j, k, m, P, R, t Calculate the numerical value of Delta V in V. Numeric: A numeric value is expected and not an expression.

Explanation / Answer

part(a)

from kirchoff loop law

E - I*(R+r) = 0

I = E/(R+r)

part(b)

I = 14/(65+13)

I = 0.18 A

part(c)

dV = E - I*r

part(d)

dV = 14 - (0.18*13)

dV = 11.66 V

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