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Of the three BJT configurations CB, CE and CC: 

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  1. CC has smallest bandwidth
  2. CB exhibits reduction in bandwidth due to Miller effect.
  3. CE exhibits increase in bandwidth due to Miller effect.
  4. CB does not have Miller effect hence higher bandwidth

Answer (Detailed Solution Below)

Option 4 : CB does not have Miller effect hence higher bandwidth
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Detailed Solution

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Since Common Base don't have Miler effect and hence it is having higher bandwidth
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