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Q-point means motionless point. At operating point the transistor emitter current and collector current doesn't change. That is why operating called as a quiesent point (q-point)
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Two point charges plus q and -q are held some distance apart what are the points at which the resultant field is parallel to the line joining the two charges?
The system of two point charges plus q and -q constitutes an electric dipole.In the case of an electric dipole ,the resultant field is parallel to the line joining the two charges at 1.any point on the line joining the charges 2.any point on the perpendicular bisector of the line joining the two charges.
How do you find electric potential at a point due to point charge?
With a magnet or by sprinkling iron fillings an cardboard if you use it to see the pattern of magnetic field.
A horizontal bar is fixed to the wall at one of the ends What is the torque at the fixation point?
The reaction at the fixation point(let's mark it 'A' point) will consist of reaction force and reaction torque. The net force for static item, consisting of sum of all the forces and the net torque have both to equal zero. To calculate force and torque at the fixation point, we need to know two things: mass of the bar and horizontal displacement of bar's center of mass from the fixation point. Since there are no forces acting in the horizontal plane, we can only take z(height) axis into consideration for forces. Reaction plus force of gravity have to be zero: RA + Q = 0, where Q denotes weight and is equal to Q = m * g, where m is mass of the bar. Calculated, RA = -Q, which means that reaction force is equal to weight, but directed in opposite way. Sum of all the torques in the bar has to be zero: MA + Q * l = 0, where MA is reaction torque at the fixation point, Q as above and l is distance from fixation point to bar's center of mass. Calculated: MA = -Q * l
When the electric charge of to objects decreased what happeneds to the force?
Assuming that the only force on the two objects is an electric force. Felectric = k Q q / r2 This is Coulomb's law. K = electrostatic constant, Q and q are the magnitudes of the point charges, and r is the distance between the point charges. As you can see, if you decrease the magnitude of the charge, the electric force decreases. In other words, the objects are less attracted to one another. aside: gravity happens to be modeled the same way.
What does charge actually mean?
Charge is the number of electrons that pass a point in a circuit per second. Hence Q=It
What is the point of Q?
Q point is also called operating point.Q point is mainly adjusted in transistors to make it stable. i.e., to operate the transistor in safe mode. Depending up on the operating current and voltage Q point is adjusted. The Q point defines the operating condition of the transistor and the transistors which quiescent point is adjusted are denoted as Q1,Q2.........Qn
What is the significance of Q point?
Q point is also called operating point.Q point is mainly adjusted in transistors to make it stable. i.e., to operate the transistor in safe mode. Depending up on the operating current and voltage Q point is adjusted. The Q point defines the operating condition of the transistor and the transistors which quiescent point is adjusted are denoted as Q1,Q2.........Qn
What is the purpose of dc biasing of transistor?
to establish Q- point or operating point...
What is Q point of a transistor?
Q point which is quiscent (silent) point is the operating point of a transistor where the variations of collector current and collector-emitter voltage take place when signal is applied.
What is q-point of transistor?
The operating point of a device, also known as bias point or quiescent point (or simply Q-point), is the DC voltage and/or current which, when applied to a device, causes it to operate in a certain desired fashion. The term is normally used in connection with devices such as transistors and diodes which are used in amplification or rectification.
How do you choose q point on load line?
the fixed amount of current and voltages are developed across the transistor is called biasing. thus the fixed voltages and current developed are called Q-point
What is the significance of operating point in transistor?
Basically, a Q-point of any device gives information about the operating current & voltage of that particular device..This would help us to know about the max. & min. current or voltage upto which the can be operated safely.
Why do you bias a field effect transistor?
we do bias field effect transistor because FET works if its Q point lies into active reason .If we bias FET ,the Q point lies in active reason
Factors responsible for stability of quiescent point?
Biasing of the transistor is responsible for stability of Q point.
Define the operating point of a transistor how it is stabilized and why it should be stabilized?
The operating point of a device, also known as bias point, quiescent point, or Q-point, is the point on the output characteristics that shows the DC collector-emitter voltage (Vce) and the collector current (Ic) with no input signal applied. The term is normally used in connection with devices such as transistors.
How much gain does a good transistor usually have?
A: A transistor has non linear gain. To find the gain a Q point must be specified
Why the base bias Q-point in transistor circuits changes with temperature?
why we use base resistor in emitter bias
