1.4 (a) A particular signal source produces an output of 40 mV when loaded by a 100-k2 resistor and 10 mV when loaded by a 10-k2 resistor. Calculate the Thé venin voltage, Norton current, and source resistance. (b) Using KVL, KCL and Thé venin theorem, compute the Thé venin voltage (Vth) at node A' and Thé venin resistance (Rth) equivalent of the circuit to the left below.

Fig: 1

Fig: 2

Fig: 3