## MCQ on current electricity for class 12 CBSE PDF

In recent exam pattern of class 8, 10 and 12, MCQ and short questions carry majority marks. In this context multiple choice questions are very much important to secure a good score in exams. Students need to find MCQs from the textbooks. But most of the students fail to gather majority of inside questions. Therefore, … Read more

## Expression for drift velocity of electrons in a conductor

In the application of an external electric field, free electrons move with some velocity in a conductor. The velocities of all the electrons are not equal at every point in the conductor at every time. So, we need to consider the average value of the velocity of electrons. This is nothing but the drift velocity … Read more

## Kirchhoff’s law of current and voltage (KCL & KVL)

Kirchhoff’s law is one of the most fundamental and useful law in current electricity. There are two laws given by Kirchhoff. These are Kirchhoff’s law of current or the Kirchhoff’s current law (KCL) and Kirchhoff’s law of voltage or the Kirchhoff’s voltage law (KVL). In another article, we have discussed Ohm’s law of electricity and … Read more

## Formula for Ohm’s law of current and Voltage

There are two basic laws of current electricity – one is Ohm’s law and other one is Kirchhoff’s law. Ohm’s law of current electricity gives the simplest relation between the current and the voltage across a resistance. In this article we are going to discuss the statement and the formula for ohm’s law of current … Read more

## Verification of Ohm’s Law experiment

We have already learned the Ohm’s Law of current electricity. Now in this article, we are going to perform an experiment for the verification of ohm’s law. This practical verification is very important for the students of class 10 and 12. This is a lab based experiment to verify ohm’s law or the Ohm’s law … Read more

## Electronic circuit components with their uses

All the electrical and electronic circuits consist of circuit components and current source or voltage source. This circuit components perform all the activities in an electric or electronic circuit. So, we need to know the purpose of every circuit components to use these in a circuit. Examples of some circuit components are Resistor, Capacitor, Inductor, … Read more