Quick questions on Op-amp circuits and mixers - WJEC GCSE Electronics (7)

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?

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An inverting amplifier has

R_f = 47\,\text{k}\Omega

and

R_{\text{in}} = 4.7\,\text{k}\Omega

. Calculate its gain. [2 marks]

What is q2?

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State the configuration to use if the output must stay the same way up as the input. [1 mark]

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