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# Points to Remember

The magnitude of current is defined as the rate of flow of charges in a conductor.

Electricity (Science)

Points to Remember

┬Ę                 The magnitude of current is defined as the rate of flow of charges in a conductor.

┬Ę                 The SI unit of electric current is ampere (A).

┬Ę                 The SI unit of electric potential and potential difference is volt (V).

┬Ę                 An electric circuit is a network of electrical components, which forms a continuous and closed path for an electric current to pass through it.

┬Ę                 The parameters of conductors like its length, area of cross-section and material, affect the resistance of the conductor.

┬Ę                 SI unit of electrical resistivity is ohm metre. The resistivity is a constant for a given material.

┬Ę                 The reciprocal of electrical resistivity of a material is called its electrical conductivity. Žā = ŌĆē1/Žü

┬Ę                 The passage of electric current through a wire results in the production of heat.

┬Ę                 This phenomenon is called heating effect of current.

┬Ę                 One horse power is equal to 746 watts.

┬Ę                 The function of a fuse wire or a MCB is to protect the house hold electrical appliances from excess current due to overloading or a short circuit.

Tags : Electricity | Science , 10th Science : Chapter 4 : Electricity
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10th Science : Chapter 4 : Electricity : Points to Remember | Electricity | Science