1 markOperational Amplifiers
CAPE Physics Unit 2 · 2003 · Paper 1 · Question 5(b)
What is meant by a 'virtual earth' in an operational amplifier circuit?
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Practise this questionOther parts of this question
- 5(a)In the space provided, sketch a typical gain frequency curve for an operational amplifier.[3 marks]
- 5(c)State ONE effect of positive feedback in an operational amplifier circuit.[1 mark]
- 5(d)(i)Calculate the net gain of the circuit.[4 marks]
- 5(d)(ii)Calculate the output voltage, V_0, when V_i = 0.01 V.[1 mark]
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