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Step 1 of 3 7.044P Refer to the figure 7.26(a) in the textbook. Apply Kirchhoff's current law at node B. Relation between and i, is, Substitute for i, in the equation (1). (2) Step 2 of 3 The collector current i, is, = Substitute = in the equation (2). (3) Step 3 of 3 Determine the input resistance between base and emitter. Refer to the equation 7.67 in the textbook. II Substitute for in the equation (3). Thus, input resistance between the base and emitter, looking into the base is equal to