A-LevelPhysicsAlternating currents9702/43 · Oct/Nov 2018 · Q78 Marks
infinite bandwidth, .[2]
- (a)(i)infinite bandwidth, .[2][2]
- (a)(ii)infinite slew rate. ....[2][2]
- (b)An incomplete circuit for a non-inverting amplifier incorporating an ideal operational amplifier is shown in [Figure 7.1]. On [Figure 7.1], draw lines to show the connections between the components to complete the circuit. [2][2]
- (c)(i)-0.36 V, VOUT = ................................................. V [1][1]
- (c)(ii)0.56 V. VOUT = ................................................. V [1][1]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2018). The mark or mark type is shown in brackets.
- [M1] gain is constant
- [A1] for all frequencies
- [B1] no time delay between input (voltage) and output (voltage)
- [B1] clear reference to change(s) in input and/or output (voltages)
- [B1] diagram: VIN connected to V⁺ only
- [B1] midpoint between resistors R₁ and R₂ connected to V⁻ only
- [A1] -3.6V
- [A1] (+)5.0V
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