In an electromechanical relay, the necessity of connecting an external base resistance arises only _________
A. in the presence of an internal pull-up resistor
B. in the absence of an internal pull-up resistor
C. in the absence of an internal push-up resistor
D. in the presence of an internal push-up resistor
Answer:B
In an electromechanical relay, the necessity of connecting an external base resistance arises only _________
A. in the presence of an internal pull-up resistor B. in the absence of an internal pull-up resistor C. in the absence of an internal push-up resistor D. in the presence of an internal push-up resistor