A 741-type OP-amp has a gain-bandwidth product of 1MHz. A non-inverting amplifier using this OP-amp & having a voltage gain of 20 db will exhibit -3 db bandwidth of
A. 50 KHz
B. 100 KHz
C. $$\frac{{1000}}{{17}}{\text{KHz}}$$
D. $$\frac{{1000}}{{7.07}}{\text{KHz}}$$
Answer: Option B
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The action of JFET in its equivalent circuit can best be represented as a
A. Current controlled Current source
B. Current controlled voltage source
C. Voltage controlled voltage source
D. Voltage controlled current source
In a p+n junction diode under reverse bias, the magnitude of electric field is maximum at
A. The edge of the depletion region on the p-side
B. The edge of the depletion region on the n-side
C. The p+n junction
D. The center of the depletion region on the n-side
To prevent a DC return between source and load, it is necessary to use
A. Resistor between source and load
B. Inductor between source and load
C. Capacitor between source and load
D. Either A or B
Gain Bandwidth, Product = β x A
10^6 = β x A
20 log A = 20
A = 10'=10
β = 100 kHz.