How do you find the voltage between terminals?

Once the current is found, the terminal voltage can be calculated using the equation V = emf − Ir. Once current is found, the power dissipated by a resistor can also be found.

What is transistor and how it works?

A transistor is a miniature electronic component that can do two different jobs. It can work either as an amplifier or a switch: When it works as an amplifier, it takes in a tiny electric current at one end (an input current) and produces a much bigger electric current (an output current) at the other.

What are the three terminals of a transistor?

A bipolar transistor has terminals labeled base, collector, and emitter. A small current at the base terminal (that is, flowing between the base and the emitter) can control or switch a much larger current between the collector and emitter terminals.

What is the relationship of current to voltage How about current and resistance?

The relationship between voltage, current, and resistance is described by Ohm’s law. This equation, i = v/r, tells us that the current, i, flowing through a circuit is directly proportional to the voltage, v, and inversely proportional to the resistance, r.

What is uses of diode?

Conducting an electric current in one direction Despite being nothing more than a simple two-pin semiconductor devices, diodes are vital to modern electronics. Some of their most common applications include turning AC to DC, isolating signals from a supply, and mixing signals.

What type of transistor is controlled by voltage?

There are two types of transistors, the FET and the BJT. The Field Effect Transistor is a voltage controlled device, because the drain current depends on the negetive voltage ( by convention) applied at the gate.

Is transistor current controlled voltage source?

Some engineers see the the transistor more as a voltage controlled current source. In BJT, the output Collector current depends upon the input base current. Once BE unction is forward biased excess current will flow. Hence BJT is a current controlled device.

What terminal of transistor that controls the flow of charges?

FETs are devices with three terminals: source, gate, and drain. FETs control the flow of current by the application of a voltage to the gate, which in turn alters the conductivity between the drain and source. FETs are also known as unipolar transistors since they involve single-carrier-type operation.

What is the current flow across the resistor in Figure 1?

Current flow between to points at positive potential. The resistors in Figure 1 don’t know anything about where your ground reference is. From the resistor’s point of view each of the circuits in Figure 1 are the same. There is a 4 V potential difference across it with the left side 4 V higher than the right.

Does current flow from the plus or minus side of voltage?

Others will tell you just the opposite, that current actually flows from the plus side of the voltage source to the minus. Who is right? How can so many technical professionals be confused about something so basic as current flow?

Which way does current flow in an electrical circuit?

If you ask several electronic engineers, technicians, scientists, or professors which way current in an electrical circuit flows, some will tell you that it flows from the negative terminal of a supply through a load to the positive terminal of the supply.

Why don’t we use electron flow instead of current flow?

Why the scientific, engineering, and academic communities refused to change to electron flow is not known. It is likely that the feeling was that electrical theory was always taught using the conventional current flow model and there was no particular need, desire, or reason to change. Change is difficult and tradition dies hard.