Electrical Power and Household Circuits — Formula Sheet
ICSE · Class 10 · Physics
11 formulas from Electrical Power and Household Circuits (ICSE Class 10 Physics) on one page, grouped by topic. Part of the ICSE Class 10 Physics syllabus.
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See them allFormulas and Key Relations
Electrical Energy and Power
W=QV
W=Vit
W=i^{2}Rt
W=\frac{V^{2}t}{R}
P=\frac{W}{t}
Power Rating and Domestic Consumption
Resistance(R)=\frac{V^{2}}{P}
Safe current i=\frac{P}{V}=\frac{\text { Rated power }}{\text { Rated voltage }}
Electrical work
W=QV, W=Vit, W=i^{2}Rt, W=V^{2}t/R.
Electrical power
P=W/t and also P=Vi, P=V^{2}/R, P=i^{2}R.
Resistance can be found using R=V^{2}/P.
Safe current can be found using i=P/V.
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