Answer
Verified109.2k+ views
Hint: In this question, the concept of the transistor is used, that is the transistor can work as an amplifier by increasing the strength of a weak signal. The transistors can act as an amplifier when they are correctly biased.
Complete step by step answer:
We know that the transistor can work as an amplifier by increasing the strength of a weak signal. The transistors can act as an amplifier when they are correctly biased.
To understand the transistor as an amplifier, let us consider Figure (1). In the given figure, a transistor is connected to the circuit as an amplifier.
Figure (1)
As we can see in Figure (1), the input of the circuit is connected to the forward biased and the output of the circuit is connected to the reverse biased.
As we know that, to the base-emitter junction input signal or current is applied and in the given circuit the output is taken through the load in the emitter collector junction and the DC voltage is applied to the emitter-base junction.
Due to low resistance in the input circuit, there will be any small change in input signal, so the small change will be in output. So, as the small input voltage gives the large output voltage, which means that the transistor is working as an amplifier.
Therefore, in the use of transistors as an amplifier, the emitter-base junction is forward biased, and the collector base junction is also reverse biased. So, the option (B) is correct.
Note: As we know that a semiconductor device which is used to amplify or switch electric signals and electrical power is called the transistor. A transistor is a composition of semiconductor devices that is having three terminals for connection to external circuits.
Complete step by step answer:
We know that the transistor can work as an amplifier by increasing the strength of a weak signal. The transistors can act as an amplifier when they are correctly biased.
To understand the transistor as an amplifier, let us consider Figure (1). In the given figure, a transistor is connected to the circuit as an amplifier.
Figure (1)
As we can see in Figure (1), the input of the circuit is connected to the forward biased and the output of the circuit is connected to the reverse biased.
As we know that, to the base-emitter junction input signal or current is applied and in the given circuit the output is taken through the load in the emitter collector junction and the DC voltage is applied to the emitter-base junction.
Due to low resistance in the input circuit, there will be any small change in input signal, so the small change will be in output. So, as the small input voltage gives the large output voltage, which means that the transistor is working as an amplifier.
Therefore, in the use of transistors as an amplifier, the emitter-base junction is forward biased, and the collector base junction is also reverse biased. So, the option (B) is correct.
Note: As we know that a semiconductor device which is used to amplify or switch electric signals and electrical power is called the transistor. A transistor is a composition of semiconductor devices that is having three terminals for connection to external circuits.
Recently Updated Pages
If x2 hx 21 0x2 3hx + 35 0h 0 has a common root then class 10 maths JEE_Main
The radius of a sector is 12 cm and the angle is 120circ class 10 maths JEE_Main
For what value of x function fleft x right x4 4x3 + class 10 maths JEE_Main
What is the area under the curve yx+x1 betweenx0 and class 10 maths JEE_Main
The volume of a sphere is dfrac43pi r3 cubic units class 10 maths JEE_Main
Which of the following is a good conductor of electricity class 10 chemistry JEE_Main