Ncert notes and solution

THE PHYSICS CAFE                                                               CHAPTER THIRTEEN – MAGNETIC EFFECTS OF ELECTRIC CURRENT 13.03 Force on current carrying conductor in magnetic field and electric motor If a wire carrying current is placed in magnetic field, then Current carrying wire will produce its own magnetic field around it and another magnetic field is already given, so both magnetic field will interact with each other and apply a force on each other, so we can say when a wire carrying current is placed in magnetic field, it experience a force   Hint: Now it become interesting to find out the direction of this force – direction of force is given by ‘Fleming’s left hand rule’ Fleming’s left hand rule: Arrange mutually perpendicular; first and second fi...

THE PHYSICS CAFE                                                                CHAPTER THIRTEEN – MAGNETIC EFFECTS OF ELECTRIC CURRENT 13.02 Magnetic field due to different shaped current carrying conductors   Hans Christian Oersted Experiment: - a link between Electricity and Magnetism i.e. electric current se magnetism banta h A compass was placed near a current carrying wire and observed Switch Current in wire Deflection in compass Switch off I = 0 nil Switch on I ≠ 0 Deflect Switch off I = 0 nil Switch on I ≠ 0 Deflect Direction of current is changed in the wire Switch Current in wire ...

THE PHYSICS CAFE                                                                                         CHAPTER THIRTEEN – MAGNETIC EFFECTS OF ELECTRIC CURRENT   13.01 Magnet, Magnetic materials, Magnetism, Magnetic field and Magnetic field lines   Magnet: If an object can attract iron, steel, cobalt and nickel, then the object is called Magnet Properties of magnet A magnet always has two poles; even you break, many times it will always acquire two poles. Monopole doesn’t exist. One pole is called north, while other is called south A mag...

THE PHYSICS CAFE                                                                                       CHAPTER TEN - LIGHT - REFLECTION AND REFRACTION   1.20 Sign Convention for Spherical Lens                                                                   ...