In the linear regulator circuit shown, the base to emitter voltage \(V_{BE}\) of the BJT is \(0.6\) V. The Zener diode clamps the base voltage to \(5.4\) V. Ignore the biasing current of the Zener diode and the BJT.
The input supply is \(10\) V and the load current is \(I_L=100\) mA. The maximum possible efficiency of the regulator circuit is % (round off to one decimal place).
