Final answer:
The value of the feedback resistor in the non-inverting amplifier circuit is 30kΩ.
Step-by-step explanation:
To determine the value of the feedback resistor in a non-inverting amplifier circuit, we can use the formula:
Gain = 1 + (Rf / Ri)
Where Gain is the desired gain and Ri is the input resistor. Rearranging the formula to solve for Rf, we get:
Rf = (Gain - 1) * Ri
Plugging in the given values, with Gain = 7 and Ri = 5kΩ, we can calculate:
Rf = (7 - 1) * 5kΩ = 30kΩ
So, the value of the feedback resistor is 30kΩ.