3.

Why is the statement 'the king can do no wrong' an accepted principle of the British parliamentary system? 

The reasons are:

i. Firstly, it means that the King is above law and cannot be tried in any court of England for any wrongful act done by him. He enjoys complete personal immunity from the jurisdiction of the ordinary courts of law. For example, if the King commits any crime, there is no process known to English law by which he can be brought to trial.

ii. Secondly, the maxim means that the King is above all the responsibility for every act performed in his name. For every act of the British government performed in the name of the king, it is the ministers who are responsible to Parliament. As a matter of fact, every order issued by the King is countersigned by the minister-in-charge who is politically responsible to the Parliament and legally responsible to the courts of law. Thus, the King can do nothing wrong or right, of a discretionary nature and having legal effect.