3. The 4.0- and 6.0- resistors are connected in parallel and the 2.0-$ resistor is in series with them. If this combination is connected to the 12-V source, find the (a) equivalent resistance of this circuit, (b) current through the source, (c) current in the 4.0- resistor, and (d) reading of a voltmeter connected in parallel with the 6.0- resistor. Draw a circuit diagram and show your work. Answers: (a) (b) (c)