Voltmeter is an electrical device that is used to measure the potential difference between two points. It is the modified form of the galvanometer. It is a high resistance galvanometer. It is always connected in parallel with the circuit component. An ideal voltmeter has infinite resistance. Conversion of galvanometer into voltmeter High Resistance A galvanometer … Read More “Voltmeter: And the process of conversion of Galvanometer into Voltmeter” »
The ohmmeter is an electrical device that is used to measure the value of unknown resistance. Conversion of galvanometer into ohmmeter A galvanometer can be converted into an ohmmeter by connecting an adjustable win resistance r and a cell in series with a galvanometer. the process of conversion of a Galvanometer into an Ohmmeter How … Read More “Ohmmeter: And the process of conversion of Galvanometer into Ohmmeter” »
MAGNETIC FIELD The space or region around a magnet within which it can influence other magnet or magnetic material. It is denoted by B. Magnetic field due to current in a long straight line EXPLANATION Consider a current carrying long, straight wire. A magnetic field B is set up around the current carrying wire. The … Read More “Magnetic field due to current in a long straight line” »
ELECTROSTATICS: The branch of physics in which we study the properties associated ( correlated) with the charges at rest. ELECTRIC FORCE: The force of attraction or repulsion between two charges is called electric force. KINDS OF CHARGES: There are two kinds of charges. (i) Positive charges (ii). Negative charges For example, the charge on a … Read More “Explanation of Electrostatics with kind and propertires of charges” »
MAGNET: The substance which attracts small pieces of iron and points toward the north and south direction when suspended freely is called a magnet. MAGNETIC MATERIAL The material which is attracted by the magnet is called magnetic material, For example, iron, cobalt, nickel, and many compounds of these materials. These are called magnetic materials. MAGNETISM … Read More “Introduction to electromagnetism and the properties of magnetic lines of force” »
Question: Define magnetic force and uniform magnetic field. Derive the expression for the force acting on a current-carrying conductor in a uniform magnetic field. Define B and its unit tesla. MAGNETIC FORCE The force exerted by the magnet on another magnet. or magnetic material is called magnetic force. It is denoted by F UNIFORM MAGNETIC … Read More “Force on a current carrying conductor in a uniform magnetic field” »
MAGNETIC FLUX The dot product of uniform magnetic field Band vector area Ā of the plane element is called magnetic flux. It is denoted by ΦB ΦB = B . A ⇒ ΦB = BA Cos θ Here A is a vector area of plane element whose direction is along the normal to the surface … Read More “Magnetic flux and Magnetic density” »
The sum of the quantities of the dot product of B and vector length ∆L (B. ∆L) for all path elements of the complete Loop is equal to μ。times the current (I) flowing through the conductor enclosed by the loop. N Σ (B. ∆L)r = μ。I r = 1 EXPLANATION Consider a closed Circular Path … Read More “Define and explain Ampere’s law” »
If you want to do well on the law admission test, English grammar is a must. This is especially true for the Reading Comprehension section of the exam. In order to improve your English grammar, read textbook exercises and use the dictionary and thesaurus to find new words. Moreover, correct your friends’ mistakes. Learning English … Read More “How to Improve Your English Grammar for the Law Admission Test” »
Diagnostic characters of Poaceae Kingdom: Plantae. Subkingdom: Tracheobionta – Vascular plants Superdivision: Spermatophyta – Seed plants Division: Magnoliophyta – Flowering plants Habit: Annual (yearly) or perennial herbs; scarcely tree (bamboos). Roots: Fibrous roots or adventitious roots. Stem: Herbaceous (relating to herbs); cylindrical; jointed, hollow at internodes. Sometimes, forms runner or rhizome. Leaves: Sessile … Read More “Poaceae or Gramineae: Grass Family Characteristics, Floral formula, Floral Diagram And Economic Importance” »