Suppose R2 =100 kΩ. What value of R1 gives a gain of−5?

= Using Kirchhoff's rules, find the following. (₁ = 70.9 V, 8₂= 60.7 V, and 83 1 E₁ R₂ E₂ 4.00 ΚΩ www R₂ 3.00 ΚΩ d E₁ 2.00 ΚΩ www R₁ (a) the current in each resistor shown in the figure above (b) the potential difference between points c and f 79.1 V.)

Activity 1: You are testing an electrical device which can be modelled by the figure shown below: 18 -j12 a b j6 -j10 it E1 12 13 E2 13 The above electric circuit can be characterized by the following equations: 1811 + j6(11 – 12) + 4(11 – 12) = 1020° -j1212 + 8(12 – I3) + 20490° + 4(I2 – 4) + j6(I2 – I1) = 0 -j1013 + 1313 – 20290° + 8(13 – 12) = 0 Find I1, I2, and I3 using the Gaussian elimination method.

When the switch is in position 2, the circuit will discharge the capacitor. Draw the circuit for the discharge phase. (without any of the charge phase components). and determine the time constant for the discharge phase and the equations for v(t) and i(t) for the discharge phase.