1. For the circuit shown below, using the method of node voltage with the bottom terminal as reference, (a) determine vi with respect to reference; (b) determine the voltage across the 5 A current...

Extracted text: 1. For the circuit shown below, using the method of node voltage with the bottom terminal as reference, (a) determine vi with respect to reference; (b) determine the voltage across the 5 A current source; (c) If the bottom node is connected to the positive terminal of a 9 V battery, and the negative terminal of the battery is connected to ground, 1. what is the voltage vi with respect to ground? 2. what is the voltage across the 1 ohm resistor? 9 V 3 A(1) ЗА 5 0 9Ω 5 A