Answer / knighttezz

BJT is a current controlled voltage device
OPAMP is a Voltage controlled voltage device

Answer / raju kumar

BJT is made up of p-n type of semicoductor . it is used to
amplify the the signal.
Where in OPAMP , it is combination of two BJT. it
is called as oprational amplifier . it is used in integrator ,
differentor, adder etc.

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