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diff --git a/2534/CH6/EX6.3/Ex6_3.sce b/2534/CH6/EX6.3/Ex6_3.sce
new file mode 100755
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+++ b/2534/CH6/EX6.3/Ex6_3.sce
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+//Ex6_3
+clc
+alpha = 0.98
+VBE = 0.7
+IE = -2*10^-3
+Re = 100
+RL = 3.3*10^3
+disp("alpha = "+string(alpha))//current gain
+disp("VBE = "+string(VBE)+"V")//voltage across base-emitter
+disp("IE = "+string(IE)+"A")//emitter current
+disp("Re = "+string(Re)+"ohm")//emitter resistance
+disp("RL = "+string(RL)+"ohm")//load resistance
+//now according to circuit given for the question in the textbook
+IC = -alpha * IE
+disp("IC = -alpha*IE = "+string(IC)+"A")//collector current
+IB = -IC - IE
+disp("IB = -IC - IE = "+string(IB)+"A")//base current
+VBN = VBE+(abs(IE)*Re)
+disp("VBN = VBE+(IE*Re) = "+string(VBN)+"V")//voltage across base and ground(N)
+//ASSUMING... value for R1 = 30*10^3 ohm
+R1 = 30*10^3
+disp("R1 = "+string(R1)+"ohm")//resistancfe R1 as given in circuit
+I = VBN/R1
+disp("I = VBN/R1 = "+string(I)+"A")//current across resistance R1
+//ASSUMING... VCC = 9V
+VCC = 9//collector voltage
+disp("VCC = "+string(VCC)+"V")
+VCN = VCC - (RL*(IC+I+IB))
+disp("VCN = VCC - RL*(IC+I+IB)) = "+string(VCN)+"V")//voltage across collector and ground(N)
+// according to the given diagram for the question in the textbook, unknown resistance is,
+R = (VCN - VBN)/(I+IB)
+disp("R = (VCN - VBN)/(I+IB) = "+string(R)+"ohm")//unknown resistance