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How was 9702 w42?

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guys what was the answer for the question about ideal op amp if the temp increase???
 
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Yea i did use the potential divider formula... nd for the first question of the op-amp... i got answer as 3.5V :/
U found the potential acrossthe first resistor. That is the potential used by it which was 3.5. Subtract it from 6 to find the potential remaining. Thst will be 2.5 and potential at b
 
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Potential at point A or was it B? I think it should be zero when it's earthed but I'm not really sure about the Vout across the thermister when it was at a lower resistance.
The op amp was used as a comparator.simply to compare the temperature
 
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U found the potential acrossthe first resistor. That is the potential used by it which was 3.5. Subtract it from 6 to find the potential remaining. Thst will be 2.5 and potential at b
Do u remember how many marks was it for ?
If it was for 2 marks, then I may get 1mark :O
 
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guys what was the answer for the question about ideal op amp if the temp increase???
 
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