Title 10th-PHYSICS - VOLUME 2.pdf ✅

i X-Physics (Vol-2) INDEX ELECTRO MAGNETISM S.NO. CONTENT DETAILS PAGE NO. 1. Memo Graph 1 2. Synopsis-1 & Worksheet -1 02 - 15 3. Synopsis-2 & Worksheet -2 15 - 23 4. Synopsis-3 & Worksheet -3 23 - 35 5. Synopsis-4 & Worksheet -4 35 - 47 ELECTROMAGNETIC INDUCTION 6. Synopsis-1 & Worksheet -1 48 - 61 SIMPLE HARMONIC MOTION 7. Synopsis-1 & Worksheet -1 62 - 73 8. Synopsis-2 & Worksheet -2 73 -91 ROTATIONAL MECHANICS 9. Synopsis-1 & Worksheet -1 92 - 100 10. Synopsis-2 & Worksheet -2 101-111 11. Synopsis-3 & Worksheet -4 111 - 120
X PHYSICS VOL - 2

X-Physics (Vol-2) 2 ELECTRO MAGNETISM Hans Christian rsted (177-1851) Ø Hans Christian Ørsted (often rendered Oersted in English; 14 August 1777 – 9 March 1851) was a Danish physicist and chemist who discovered that electric currents create magnetic fields, an important aspect of electromagnetism. He shaped post-Kantian philosophy and advances in science throughout the late 19th century. In 1824, Ørsted founded Selskabet for Naturlærens Udbredelse (SNU), a society to disseminate knowledge of the natural sciences. He was also the founder of predecessor organizations which eventually became the Danish Meteorological Institute and the Danish Patent and Trademark Office. Ørsted was the first modern thinker to explicitly describe and name the thought experiment. A leader of the so-called Danish Golden Age, Ørsted was a close friend of Hans Christian Andersen and the brother of politician and jurist Anders Sandøe Ørsted, who eventually served as Danish prime minister (1853–54). KNOW YOUR SCIENTIST J e a l m s C erk Ma l 1 xwe 3 l 8 (1 - 1879) Hans Chr t a is n i e Ørst d ( 7 17 1- 85 ) 1 ELECTRO MAGNETISM SYNOPSIS-1 INTRODUCTION We are familiar with the properties of a magnet, e.g., the existence of poles, opposite poles attract each other while similar poles repel each other, a freely suspended magnet points in north-south direction, etc. There was a time when magnetism was regarded as a separate branch of science having no connection with electricity. In 1820, Oersted discovered that a compass needle suffers a deflection when brought near a current carrying wire. This shows that a electric charge in motion produces a magnetic field in the space around it. It should be remembered that a charge(whether it is stationary or in motion) produces an electric field around it but when it is in motion, then in addition to electric field is also produces a magnetic field. So magnetism and electricity are two aspects of a single phenomenon. Now a days, electricity and magnetism are related by electro-magnetism. OERSTED’S EXPERIMENT In 1820,the Danish scientist Oersted discovered the magnetic effect of current. The experimental arrangement is shown in figure Oersted observed that when a current carrying conductor PQ is held above a magnetic needle, the orientation of the needle is changed. The change of orien- tation depends on the strength of the current and its direction. When the cur- rent passes from P to Q[Fig.(1a)], i.e., from south to north, the north pole of the needle gets deflected towards west (into the paper). On the other hand, if the current passes from Q to P [fig.(1b)], i.e., from north to south, then the north pole gets deflected towards east. X PHYSICS VOL - 2