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By continuing to use our website, you agree to our Privacy Policy and Cookie Policy. Home 20 Trending Quiz Feedback Add Ncert Exemplar Class 10th Science Fiction to home. Chapter 5: Periodic Classification of Elements. Chapter Light - Exemplar Class 10th Ncert Science Fiction Reflection and Refraction. A magnetic field exists in the region surrounding a magnet, in which the force of the magnet can be detected. Field lines are used to represent a magnetic field.
A field line is the path along which a hypothetical free north pole would tend to move. The direction of the magnetic field at a point is given by the direction that a north pole placed at that point would take. Field lines Ncert Exemplar Class 10th Science Fiction are shown closer together where the magnetic field is greater. A Ncert Fiction Exemplar 10th Science Class metallic wire carrying an electric current has associated with it a magnetic field. The field lines about the wire consist of Ncert Exemplar Class 10th Science Fiction a series of concentric circles whose direction is given by the right-hand rule.
The pattern of the magnetic field around a conductor due to an electric current flowing through it depends on the shape of the conductor. The magnetic field of a solenoid carrying a current is similar to that of a bar magnet.
An electromagnet consists of a core of soft iron wrapped around with a coil of insulated copper wire. A current-carrying conductor when placed in a magnetic field experiences a force.
This is the basis of an electric motor. An electric motor is a Ncert Exemplar Class 10th Science Fiction device that converts electric energy into mechanical energy. The phenomenon of electromagnetic induction is the production of induced current in a coil placed in a region where the magnetic field changes with Ncert Exemplar Class 10th Science Fiction Fiction Exemplar Ncert Class Science 10th time.
The magnetic field may change due to a relative motion between the coil and a magnet placed near to the coil. If the coil is placed near to a current-carrying conductor, the magnetic field may change either due to a change in the current through the conductor or due to the relative motion between the coil and conductor. A generator converts mechanical energy into electrical energy. It works on the basis of electromagnetic induction.
In Ncert Exemplar Class 10th Science Fiction our houses we receive AC electric power of V with a frequency of 50 Hz. One of the wires in this supply is with red insulation, called live wire. The other one is of black insulation, which is a neutral wire. The potential Ncert Exemplar Class 10th Science Fiction difference between the two is V. The third is the earth wire that has green insulation and this is connected to Ncert Exemplar Class 10th Science Fiction a metallic body deep inside earth. It is used as a safety measure to ensure that any leakage of current to a metallic body does not give any severe shock to a Ncert Exemplar Class 10th Science Fiction user.
Fuse is the most important safety device, used for protecting 10th Science Ncert Class Exemplar Fiction the circuits due to short-circuiting or overloading of the circuits. Acid-base Ncert Exemplar Class 10th Science Fiction indicators are dyes or mixtures of dyes which are used to Ncert Exemplar Class 10th Science Fiction indicate the presence of acids and bases. Formation of OH� aq ions in solution is responsible for the basic nature of a substance. When an acid reacts with a metal, hydrogen gas Ncert Exemplar Class 10th Science Fiction is evolved and a corresponding salt is formed. When a base Ncert Exemplar Class 10th Science Fiction reacts with a metal, along with the evolution of hydrogen gas a salt is formed which has a negative ion composed of the metal and oxygen.
When an acid reacts with a metal carbonate or metal hydrogencarbonate, it gives the corresponding salt, carbon Ncert Exemplar Class 10th Science Fiction dioxide gas and water. Acidic and basic solutions in water conduct electricity because they produce hydrogen and hydroxide ions respectively. The strength of an acid or an alkali Class 10th Ncert Exemplar Science Form can be tested by Ncert Exemplar Class 10th Science Fiction using a scale called the pH scale which gives the measure Class Science 10th Fiction Exemplar Ncert of hydrogen ion concentration in a solution.
A neutral solution has a pH of exactly 7, while an acidic solution has a pH less than 7 and a basic solution a pH more than 7. Living beings carry out their metabolic activities within Ncert Class Science Exemplar Fiction 10th an optimal pH range. Mixing concentrated acids or bases with water is a highly exothermic process. Acids and bases neutralise each other to form corresponding salts and water.
Water of crystallisation is the fixed number of water molecules chemically attached to each formula Ncert Exemplar Class 10th Science Fiction unit of a salt in its crystalline form.
Salts have various uses in everyday life and in industries. Students must see Previous Years Board Papers to understand the difficulty of questions. If you are having any suggestion for the improvement, your are welcome.
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