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Electricity
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Storyboard Tekst

  • SI unit of electric Charges is coulomb(C)
  • Q=N E where N -no. of electrons and E- electrons(6X10^18)
  • Hello friends my name is Joel
  • ELECTRICITYCH-12
  • Today let's talk about electricity!
  • Electric power is the rate of consumption of energy
  • SI unit of potential difference is volt(V)
  • the formula of Potential Difference is V=W/Q where work done is (w)and charge is (Q)
  • Potential difference is the work done in moving a unit of positive electric charge from one point to another
  • Ohm's law states that at constant temperature,the current flowing through a conductor is directly proportional to the potential difference between the ends [ V = R I ]
  • Electrical resistivity can be defined as a measure of how strongly material opposes a flow of electrical current
  • A voltmeter is an instrument used for measuring electric potential difference between two points in an electric circuit
  • Resistance of a conductor depends on the 1)On its length 2)On its area of cross section 3)On the nature of its material
  • An ammeter is a measuring instrument used to measure the current in a circuit
  • Resistance is the property of a conductor to resistance the flow of charges through it[ R = PL/A ]
  • Resistivity is represented as "P"
  • There are 2 methods of joining the resistors together:In series and in parallelseries:Rs=R1 +R2 +R3parallel:1/Rp =1/R1 + 1/R2 +1/R3
  • Joule's law of heating states that heat produced in joules when a current of" I "amperes flows in a wire of resistance R ohms for time t seconds is given by H = I2Rt.
  • Thank you friendsfor listening to me
  • and stay safe guys!
  • Joel k Mathews from X-C
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