Chapter-4|Moving Charges and Magnetism| NCERT 12th Physics: Motion(Path) of Charged Particle in Magnetic Field: We know that in circular motion moving object motion will be balance by centripetal force. Some Important Concept:
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Chapter-4|Moving Charges and Magnetism| NCERT 12th Physics: Force on a Moving Charge in a Uniform Magnetic Field: There is no Force Act on Charged Particle: Direction of Magnetic Force: By following method we can find the direction of magnetic force. Note: (I) Firstly put your thumb, fore finger and middle finger perpendicular
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Chapter-4|Moving Charges and Magnetism| NCERT 12th Physics: Toriod: The toroid is a hollow circular ring on which a large number of insulated turns of a metallic wire are closely wound. Toroid is used in devices such as synchrotron in which high magnetic field is required. Note: Since there is no current is flowing inside
Chapter-4|Moving Charges and Magnetism| NCERT 12th Physics: Solenoid: A solenoid is a insulated long wire closely wound in the form of a helix. Its length is very large as compared to its diameter. In television, we make use of solenoid to generate magnetic field needed for the deflection of electron in the picture tube. Magnetic
Chapter-4|Moving Charges and Magnetism| NCERT 12th Physics: Application of Ampere’s Circuital Law: Magnitude of Magnetic Field of a Straight Wire (Infinite) Using Ampere’s Law: Magnetic field due to a straight conductor at point P, at a distance r from the wire. Now, We will draw a circle with radius r, passes through point P (called
Chapter-4|Moving Charges and Magnetism| NCERT 12th Physics: Ampere’s Circuital Law: According to this law, the line integral of a magnetic field B around any closed path in vacuum is µ0 times the net current Inet enclosed by the curve. It is another method to calculate magnetic field strength due to current like Biot Savart’s law. Ampere’s
Chapter-4|Moving Charges and Magnetism| NCERT 12th Physics: Magnetic Field Due to a Current Carrying Conductor: Magnetic Field On The Axis of a Circular Current Carrying Loop: Let we consider a circular loop of radius R with Centre C. Let we consider current element Idl on the top and the bottom. Now, magnetic field
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Chapter-4|Moving Charges and Magnetism| NCERT 12th Physics: Magnetic Field Due to a Current Element: Biot-Savart’s Law: Biot-Savart’s law is an experimental law predicted by Biot and Savart. This law deals with the magnetic field induction at a point due to a small current element. Note: Since, only dl have no direction, So we consider idl(current
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Chapter-4|Moving Charges and Magnetism| NCERT 12th Physics: Magnetic Field: The space in the surrounding of a magnet or a current carrying conductor in which its magnetic influence can be experienced is called magnetic field. Oersted’s Experiment: In summer’s of 1820, HC Oersted’s by his experiment concluded that a current carrying conductor detects magnetic compass
