(a(i))[2]
State what negative feedback means.
(a(ii))[2]
State two effects of negative feedback on an amplifier's gain.
(b(i))[2]
An ideal op-amp is used in the amplifier circuit shown in Fig. 8.1. Calculate the gain $G$ of the amplifier circuit.
(b(ii))[2]
Determine the output potential difference $V_{\text{OUT}}$ for the following input potential differences $V_{\text{IN}}$ of 1. $-0.10\,\text{V}$, 2. $+1.3\,\text{V}$.
(b(iii))[1]
The gain of the amplifier shown in Fig. 8.1 stays constant. State one alteration to the circuit of Fig. 8.1 so that the amplifier circuit can monitor light intensity levels, with the gain magnitude falling as light intensity rises.