Current Electricity
ICSE · Class 9 · Physics
All formulas from Current Electricity in ICSE Class 9 Physics. Key equations, constants, and identities for board exam preparation.
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1. Electric Current and Charge
I = Q / t
Q = n × e
I = Q / t = ne / t
1 ampere (A) = 1 coulomb (C) / 1 second (s)
4. Current Direction and Potential
V = W' / q
V1 - V2 = W / q
1 volt = 1 joule / 1 coulomb
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