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All Formulas of Electricity

The document lists essential formulas related to electricity, including relationships between current, charge, voltage, resistance, power, and heat. It also provides information on measuring devices such as ammeters, voltmeters, and ohm meters, along with their connection methods. Additionally, it includes important unit conversions and constants related to electrical measurements.

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Ujjwal Verma
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31 views1 page

All Formulas of Electricity

The document lists essential formulas related to electricity, including relationships between current, charge, voltage, resistance, power, and heat. It also provides information on measuring devices such as ammeters, voltmeters, and ohm meters, along with their connection methods. Additionally, it includes important unit conversions and constants related to electrical measurements.

Uploaded by

Ujjwal Verma
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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All Formulas of Electricity:

1) I = Q/t
2) Q = ne
3) V = W/Q
4) V = IR
5) R = Rho x L/A
6)Resistance in Series: Rs = R1 + R2 + R3
7)Resistance in Parallel: 1/Rp = 1/R1 + 1/R2 + 1/R3 (» Reciprocal of R1+R2+R3)
8)H = V × Q i) H = VIt ii) H = I²Rt iii) H = V²t/R
9) P = W/t i) P = VI ii) P = I²R iii) P = V²/R
10) E = P × t S.I. Units: Current ( I ) - Ampere Charge ( Q ) - Coulomb Time ( t ) - Second
Potential Difference or Voltage ( V ) - Volt Resistance ( R ) - Ohm Ω Resistivity ( Rho ) - Ohm
meter Power ( P ) - Watt Heat = Energy = Work = Joule Measuring Devices: Ammeter / Milli
Ammeter - for measuring current (always connected in series) Galvanometer - for measuring
small/sensitive currents (we can also get the direction of the current) Voltmeter - for measuring
volts (always connected in parallel) Ohm Meter - Measures the resistivity Things to remember:
electron charge = (-1.6 x 10⁻¹⁹ C) 1Ampere = 1000mA 1 Killowaat = 1000W 1 Horse Power =
746W
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