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Free physics notes for students and homeschoolers! Increase your knowledge now! Got a question? Get that answered at Mini Physics! Check out the interesting phenomenons in the blog

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Language: English

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Latest Blog Posts for Mini Physics

  • PowerPower is defined as the rate of work done or energy converted with respect to time. $P = \frac{W}{t}$ OR $P = \frac{E}{t}$, where W = work, t = time, E = Energy SI Unit for power is watt (W), scalar quantity Another useful equation for power: P = Fv...
  • EnergyEnergy of a system is defined as its capacity to do work. SI unit : joules (J) Scalar Quantity   Energy can be converted from one form to another. It can also be transferred from one body to another through work done and/or heat exchanges. ...
  • WorkWork is done when a force moves the object in the direction of the force and is given by the product of the force and the distance moved in the direction. W = Fs , Where W= Work, F = Constant Force (N), S = Distance moved in the direction of the f...
  • Work, Energy and Power (A level)Work is done when a force moves the object in the direction of the force and is given by the product of the force and the distance moved in the direction. W = Fs , Where W= Work, F = Constant Force (N), S = Distance moved in the direction of the forc...
  • Reading kinematics graphs  For a distance-time graph, the distance never decreases. The gradient of a distance-time graph is the instantaneous speed of the object. When the object is stationary, the distance-time graph will be horizontal.     The above figure...
  • Workings of a Transformer
    on Feb 15, 2014 in O Level
    A transformer is a device that changes a high alternating voltage at low current to a low alternating voltage at high current or vice versa. Structure of transformer: Primary coil: Connected to primary input voltage ($V_{p}$) with turns ($N_{p}$) Sec...
  • Principles Of Electromagnetic Induction
    on Feb 15, 2014 in O Level
    Faraday’s Law of Electromagnetic induction is the process in which an electromotive force (emf) is induced in a closed circuit due to changes in the magnetic field around the circuit. Lenz’s law states that the direction of the induced e.
  • Electromagnetic InductionThis topic covers “Electromagnetic Induction” of O Level Physics. (Equivalent to American high school diploma) If this is too basic for you, you can try the more advanced version here. Sub-Topics: Electromagnetic induction and links with Faraday...
  • Workings Of D.C. Motor
    on Feb 15, 2014 in O Level
    In order to understand how a D.C. motor works, we will need to learn how a current-carrying coil generates turning effect in a magnetic field. Turning effect of a current-carrying coil in a magnetic field The coil is placed horizontally between two m...
  • Fleming’s Left Hand Rule
    on Feb 15, 2014 in O Level
        When a conductor carrying a current is placed in a magnetic field, the conductor experiences a magnetic force. The direction of this force is always right angles to the plane containing both the conductor and the magnetic field, and is...
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