Electricity
نص القصة المصورة
- 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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