69. A load resistor is connected across the open terminals of the circuit shown in Fig. 5.107, and its value was chosen carefully to ensure maximum power trans- fer from the rest of the circuit. (a) What is the value of the resistor? (b) If the power absorbed by the load resistor is three times as large as required, modify the circuit so that it performs as desired, without losing the maximum power transfer condition already enjoyed. 1.2 A Fors 0.8 A FIGURE 5.107 1.8 Ω www 5.4 Ω Ι Σ 3Ω 5Ω 110 COIA 0.1 A

The term "controlling light" is defined as follows:

I don't understand how you got the kp value. Could you break it into more steps please?

Q3\ Draw the symbols of the following electronic devices. 1- LDR, 2-DIAC, 3-p-channel JFET, 4- Current meter