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Physics

Numerical Problems on Current Through Toroids or Rowland Ring

Science > Physics > Magnetic Effect of Electric Current >Numerical Problems on Toroids or Rowland Ring Example 01: A Rowland ring (toroid) of ferromagnetic material of a mean radius 15 cm has 3000 turns of wire wound it. The relative permeability of the material is 1000. What is the magnetic field in a core when […]

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Physics

Biot-Savart’s Law

Science > Physics > Magnetic Effect of Electric Current > Biot-Savart’s Law In this article, we shall study Biot-Savart’s Law and its application to find the magnetic induction at a point due to current carrying infinitely long conductor and the magnetic induction at the centre of a current-carrying circular coil. Magnetic Induction: The magnetic induction […]

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Physics

Introduction to Magnetic Effect of Electric Current

Science > Physics > Magnetic Effect of Electric Current > Magnetic Effect of Electric Current In this article, we shall study the magnetic effect of electric current and its applications. Oersted’s Experiment: Oersted performed an experiment to show the magnetic effect of electric current. He took long conducting wire and aligned it in magnetic meridian […]

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Physics

Cyclotron

Science > Physics > Magnetic Effect of Electric Current > Cyclotron The device which uses the electric or magnetic field to guide and accelerate a beam of charged particles to high speed is called a particle accelerator. Charged particles used may be protons or electrons. These high-velocity particles are used in nuclear physics and high […]

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Physics

Tangent Galvanometer

Science > Physics > Magnetic Effect of Electric Current > Tangent Galvanometer In this article, we shall study, the principle, construction, working, sensitivity, and accuracy of the tangent galvanometer. Principle: The tangent galvanometer works on the principle of tangent law. The magnetic needle is subjected to two magnetic fields which are perpendicular to each other. […]

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Physics

Ammeter and Voltmeter

Science > Physics > Magnetic Effect of Electric Current > Ammeter and Voltmeter Ammeter: An ammeter is an electrical measurement device (apparatus) which is used to measure the electric current in the electrical circuit. Requirements of Good Ammeter: The resistance of an ammeter must be as small as possible.  The ideal resistance of an ammeter […]

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Physics

Moving Coil Galvanometer

Science > Physics > Magnetic Effect of Electric Current > Moving Coil Galvanometer In this article, we shall study principle, construction, working, sensitivity and accuracy of the moving coil galvanometer Principle: When a current-carrying coil is suspended in a uniform magnetic field it is acted upon by a torque. Under the action of this torque, […]

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Physics

Ampere’s law

Science > Physics > Magnetic Effect of Electric Current > Ampere’s law In this article, we shall study the Ampere’s law and its application in finding magnetic induction due to long straight conductor, solenoid and toroid. Statement: The line integral of the magnetic field B around any closed path is equal to μ0 times the net […]