Mir Most of the materials are affected by the magnetic field. These materials are magnetic materials. The origin of magnetic moment in these materials is the rotation of orbital electrons around the nucleus. On the basis of the magnetic properties of materials, there are five types of magnetic materials – Diamagnetic materials, Paramagnetic materials, Ferromagnetic materials, … Read more
The origin of magnetism is the motion of charged particles. In every atom, there are some electrons and protons. As the electrons are revolving around the nucleus and also spinning around their own axes, the atomic system behaves like a magnetic dipole. Therefore, atoms can produce a magnetic field or can have a magnetic moment … Read more
Nuclear fission and nuclear fusion are two nuclear phenomena to produce nuclear heat energy. But these two phenomena occur in different conditions and the amount of heat generation is also different in these two phenomena. In this article, we are going to discuss the definition, properties, examples, uses and differences between nuclear fission and nuclear … Read more
Scientist Rutherford gave the atomic theory on the basis of alpha particle scattering experiment. But this theory was unable to consistent with the stability of an atom. To explain the stability of atoms, scientist Niels Bohr gave a theory or model by modifying Rutherford model which is known as the Bohr atomic model. He explained … Read more
The elements that emit alpha, beta and gamma rays spontaneously are called radioactive elements. All elements are not radioactive elements. Again, all isotopes of an element are not radioactive. In this article, we are going to discuss which isotopes of radioactive elements have radioactive property. Here, we will choose the examples of radioactive isotopes of … Read more
A switch or key is useful to activate or deactivate a device. For example, if we want to ON or OFF a fan or a TV or a Tube light we need to press on switches. Sometimes, in physics laboratory, we use tapping keys to connect the circuit to get a current flow. These all … Read more
In this article, we are going to discuss MCQ questions on electric potential for class 12. These multiple choice questions on electrostatic potential will be helpful for class 12 students of CBSE board and all other boards. Chapter-2: Electrostatic potential and Capacitance MCQ on electric potential 1. If V be the electric potential at the … Read more
We have already learned electric charges and electric field in detail. Now, it’s time to practice some multiple-choice questions on electric charges and electric fields for class 12 physics. It is very helpful for board exams and NEET exam. This topic is included in class 12 NCERT physics chapter 1 for CBSE and other boards. … Read more
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
A capacitor can store electric charges and releases them whenever it is required. But how can a capacitor store energy in it? What is the formula of energy stored in a capacitor? The application of an external voltage across a capacitor produces an electric field between the plates of the capacitor. This electric field moves … Read more