Answer:

From the diagram we can see that:

• R₁ = 4700 W

• R₂ = 2200 W

•  C = 2.0 × 10^-6 F

  We need to substitute these values into the formula:

                        f = ____1.4_____ = ____           1.4____________

                               (R₁ + 2R₂)C      [4700 + (2 × 2200)] × 2.0 × 10^-6

                         =  ____ 1.4_______ = 77 Hz

                             9100 × 2.0 × 10^-6

Back to worked example                        Back to Topic 11