0<\/sub> times the current passing through the surface.
\n<\/p>\nConsider a circular loop of radius \u2018a\u2019 and carrying current 9\u2019. Let P be a point on the axis of the coil,\u00a0at distance x from A and r from \u2018Os. Consider a small length dl atA.<\/p>\n
The magnetic field at \u2018p\u2019 due to this small element dl,
\n<\/p>\n
The dB can be resolved into dB cosc\u03a6 (along Py) and dB sin\u03a6 (along Px).<\/p>\n
Similarly consider a small element at B, which produces a magnetic field \u2018dB\u2019at P. If we resolve this magnetic field we get.<\/p>\n
dB sinc\u03a6 (along px) and dB cosc\u03a6 (along py1) dB cosc\u03a6 components cancel each other, because they are in opposite direction. So only dB sinc\u03a6 components are found at P, so total filed at P is
\n<\/p>\n
OR<\/p>\n
It is an instrument used to measure small current.<\/p>\n
Principe : A conductor carrying current when placed in a magnetic field experiences a force, (given by Fleming\u2019s left-hand rule).
\n<\/p>\n
A moving coil galvanometer consists of rectangular coil of wire having area \u2018A\u2019 and number of turns \u2018n\u2019 which is wound on metallic frame and is placed between two magnets, The magnets are concave in shape, which produces radial field.<\/p>\n
Working : Let \u2018I\u2019 be the current flowing the coil, Then the torque acting on the coil.<\/p>\n
\u03c4 = NIAB Where A is the area of coil and B is the magnetic field.<\/p>\n
This torque produces a rotation on coil, thus fiber is twisted and angIe (\u03a6). Due to this twisting a restoring torque (\u03c4 = K\u03a6) is produced \u00a1n spring.<\/p>\n
Under equilibrium, we can write Torque on the coil = restoring torque on the spring
\n
\nThe quantity inside the bracket is constant for a galvanometer.
\n\u03a6 \u03b1 l
\nThe above equation shows that the deflation depends on the current passing through the galvanometer.<\/p>\n
We hope the Kerala Plus Two Chemistry Chapter Wise Questions and Answers Chapter 4 Moving Charges and Magnetism help you. If you have any query regarding Kerala Plus Two Chemistry Chapter Wise Questions and Answers Chapter 4 Moving Charges and Magnetism, drop a comment below and we will get back to you at the earliest.<\/p>\n","protected":false},"excerpt":{"rendered":"
Plus Two Physics Chapter Wise Previous Questions Chapter 4 Moving Charges and Magnetism is part of Kerala Plus Two Physics Chapter Wise Previous Questions and Answers Kerala. Here we have given Plus Two Physics Chapter Wise Questions and Answers Chapter 4 Moving Charges and Magnetism. Kerala Plus Two Physics Chapter Wise Previous Questions and Answers […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[42728],"tags":[],"yoast_head":"\n
Plus Two Physics Chapter Wise Previous Questions Chapter 4 Moving Charges and Magnetism - A Plus Topper<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\t\n