(a(i))[1]
State the name given to this amplifier circuit.
(a(ii))[1]
State the gain $G$ as a formula involving resistances $R_1$ and $R_2$.
(b(i))[2]
The resistance of $R_1$ is $820\,\Omega$. The resistor with resistance $R_2$ is replaced by a light-dependent resistor (LDR). The input potential difference $V_{\text{IN}}$ is $15\,\text{mV}$. Calculate the output potential difference $V_{\text{OUT}}$ when the LDR has a resistance of $100\,\Omega$ (the LDR is in sunlight).
(b(ii))[1]
Calculate the output potential difference $V_{\text{OUT}}$ when the LDR has a resistance of $1.0\,\text{M}\Omega$ (the LDR is in darkness).