Given the AC network in Fig. In this network, R = 5 Q and the frequency is 50 Hz I2 = 6A90 Figure 3:

1) Please determine the current running through and voltage across the resistor R

2) In the Fig. 3 circuit, assuming that you can replace the resistor R by a circuit LOAD having R and an additional capacitor or inductor, please propose circuit schematic of LOAD to ensure maximum power to the resistor R. Find that maximum power. 

3) In the Fig. 3 circuit, without removing current circuit components, by using one additional ideal transformer and one additional capacitor or inductor, please propose and present a simple circuit modification to ensure maximum power delivered to the resistor R. Determine that maximum power.

Many many thanks for your helps :)