7. Find the currents I₁ and 12 in the following circuit, (16 points) - node V=IR 18ΚΩ 12ΚΩ RE 12 V + ww -Supernode 6ΚΩ 4k9k 12 RE22

7 Let Vab_c be the voltage when R17 is connected and Vab_d when R17 is disconnected, find these voltages and the total current with R17 connected. Express your result as IT=1A, Vab_c=5.33V, Vab_d=2.88V R16 6.Q a R17 3.Q R18 w 4Ω V5 8V R19 202

12

Find r_total and i_total for the given circuit below

Consider the following RL circuit with Vs-200V, R1- 100 ohm, R2- 100 ohm, R3- 50 ohm, L-20 H. The switch S is closed for 2 seconds, then it is opened. How much time it takes to drop the inductor current to 0.5 A? R$ 10 ms 0.5 ms 2.30 s 89 ms سه RI R₂

Three resistance of 40ohm, 60ohm and 80ohm are connected in delta. So find the equivalent resistance of its star connection

Voltage dividers Voltage dividers are quite common in electronics. They are a cheap, easy, and quick way to linearly scale a signal or derive a reference voltage from a source. For example, we may need to scale a 12V signal down to a 3V signal so we can use an ADC to measure it. I Vo- Ra Vout =V₂ Choose any values for R₂ and R, between 1000-99990, calculate Vout. What happens to Vout if you multiply Ra and Rb by 1000? Show your work. Show that Vout will be close to Vin if Ra < Rò. You can do this numerically by calculating Vout for at least 2 different values of Ra, or you may do it mathematically by setting up the equations, or you could simulate it. However you choose to do it, please show your work. Show that Vout will be close to OV if Rb < Ra.

PLEASE LABEL AND DESCRIBE DIAGRAM

For the following circuit, Vsrc=1.5 V and Rload%3D225 Q. What is the power sourced by the DC voltage supply? Is Vsrc VR Rload 1.5 W 10 mW 81 mW 6.67 mW

Initially a 10 V battery is in series with a 100 ohm resistor and a 2 mH inductor. After along time, a switch is thrown to remove the battery from the circuit, and replacing itwith another 100 ohm resistor (and so the inductor ends up with two 100 ohm resistorsin series).What is the current at t=0 s (immediately after the switch is thrown)?What is the current at t=5 s later?