In a transistor switch the parameters of NPN transistor are : hfe = 30, VE(sat) = 0.1, Vcc = +10 and R1 = 2KQ, Binary logic voltage (-10v,+10v) is applied at the input. Determine the value of...

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Extracted text: In a transistor switch the parameters of NPN transistor are : hfe = 30, VE(sat) = 0.1, Vcc = +10 and R1 = 2KQ, Binary logic voltage (-10v,+10v) is applied at the input. Determine the value of resistance RB for its working as a switch.