Answer Happy

x Given circuit A (left) and circuit B (right) in the given figure, which of the following is false? 100 son 1 IA 3200 SV IA 3200 w a. Using nodal analysis, circuit A will have fewer unknowns compared to circuit B. b. There are two known voltage values in circuit A. Using nodal analysis, circuit A will have 3 unknowns. d. Using mesh analysis, the number of unknowns will be the same for both circuits. XI. The given figure shows a circuit with a 500-ohm appliance connected to a constant 10-A source. Due to an unexpected insulation failure of the wires, a 5000-ohm human gets in contact with the live circuit resulting in dangerous current levels that may flow through the body. However, closing the switch to connect the 0.001-ohm resistor to the circuit may save the human from electrocution. How is this possible? Switch 1040 500 n 5000 0.001 a Closing the switch increases the voltage across the 500-ohm appliance; therefore, the voltage across the human should be reduced as stated by KVL b. Closing the switch introduces a path with significantly less resistance compared to the human. Therefore, most of the current will flow through this low-resistance path instead of going through the human and the appliance c Closing the switch increases the resistance of the human. Therefore, the body will absorb less current d. The switch must not be closed in the first place since keeping it open will not allow current to fiow through the circuit due to an open-circuit condition XII. Is the circuit shown in the given figure valid? If yes, what is the power supplied by the 2-A current source? 15V a. The circuit is invalid since KCL and KVL are not satisfied. The power supplied by the 2-A source cannot be determined. b. The circuit is valid.The 2-A source is delivering 54 W to the circuit. The circuit is valid.The 2-A source is delivering -6 W to the circuit. Therefore, it is actually consuming & W. d. The circuit is valid. The 2-A source is delivering -54 W to the circuit Therefore, it is actually consuming 54 W. 14 12V 2A