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EPARTMENT Q2. Mark tick (√) on the most appropriate answer: 1. Op-amp circuits are used in a) Only dc voltmeters. b) Only ac c) Both ac and de d) Neither ac nor de 2. How many op-amps are required to implement this equation? Vo = V1 a) 2 b)3 c) 4 d) 1 3. Power diode is a) a three terminal semiconductor device b) a two terminal semiconductor device c) a four terminal semiconductor device d) a three terminal analog device 4. The material used between the plates of a capacitor is called its: a) insulation material b) dielectric material c) separation material d) plate-divider material 5. As a capacitor is being charged, current flowing into the capacitor will: a) increase b) decrease c) remain the same d) cannot tell 6. 7200 mV is the same as a) 7.2 V b) 7.2 V c) 7,200,000 V d) 0.0072 V