1.

Determine the voltage gain and the input resistance for each of the ideal operational amplifier circuits of Fig 4.1.

Figure 4.1

2.

Determine the voltage gain and the input resistance for each of the ideal operational amplifier circuits of Fig 4.2.

Figure 4.2

3.

Determine the voltage gain of the ideal operational amplifier circuit of Fig 4.3.

Figure 4.3

4.

Determine the ratio, v _o/ v _i, in the ideal operational amplifier circuit of Fig 4.4.

Figure 4.4

5.

For the ideal operational amplifier shown in Fig 4.5, determine the gain G = v _o/ v _i, for the conditions of (a) R ₁ = 100 k ? and R _f = 900 k ?, (b) R ₁ = 50 k ? and R _f = 750 k ? and (c) R ₁ = 100 k ? and R _f = 1.1 M ?.

Figure 4.5

6.

For the ideal operational amplifier arrangement shown in Fig 4.6, determine the output voltage, v _o if the input voltage, v _i, is equal to 1.20 V.

Figure 4.6

7.

Figure 4.7 shows an ideal operational amplifier connected as a differential amplifier. Both the inverting and non-inverting terminals are used. Determine an expression for the output voltage, v _o, as a function of v _i1 and v _i2 [ v _o