Current Electricity

Subject: Physics    Exam: MUOET Engineering

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Important Concepts in Current Electricity

Find notes, videos, important points and questions to practice on each of these concepts.

• Electric Current

• Resistance and Ohm's Law

• Variation of Resistance With Temperature

• Electric Cell

• Combination of Resistances

• Kirchoff's Law

• Combination of Cells

• Wheatstone's Bridge

• Potentiometer

• Moving Coil Galvanometer

• RC Circuits

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Important Points

Electronic resistors have colored bands on them to denote their level of resistance. Each color represents a number from 0 to 9. In the order of the mnemonic:

Black (0), Brown (1), Red (2), Orange (3), Yellow (4) , Green (5) , Blue (6) , Violet (7) , Gray (8) , White (9)
Bye Bye Rosie Off You Go to Birmingham Via Great Western
Ohm's law can be remembered as "Volcanoes Are Rare" i.e. Volt = Amps x Resistance

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