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Formula Sheet

Current Electricity — Formula Sheet

TG EAPCET · Physics

Free Current Electricity formula sheet for TG EAPCET Physics 2026 — all important formulas, equations, and constants for quick reference.

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Formula Sheet — Current Electricity

Important formulas and equations from Current Electricity for TG EAPCET Physics.

Formulas — Current Electricity

Electric Current

I = Q/t
I = nAev_d

Ohm's Law and Resistance

V = IR
R = ρl/A
J = σE = E/ρ
v_d = eEτ/m

Electrical Power and Energy

P = VI = I²R = V²/R
W = Pt = VIt = I²Rt
P_loss = I²R_c = P²R_c/V²

Combination of Resistors

R_series = R₁ + R₂ + R₃ + ...
1/R_parallel = 1/R₁ + 1/R₂ + 1/R₃ + ...
R_parallel = R₁R₂/(R₁ + R₂)

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Frequently Asked Questions

What topics are covered in Current Electricity for TG EAPCET?
Current Electricity is an important chapter in TG EAPCET Physics. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Electric Current and Current Density, Ohm's Law and Resistance, Drift Velocity and Microscopic Origin, Temperature Dependence of Resistivity.
How important is Current Electricity for TG EAPCET?
Current Electricity is a frequently tested chapter in TG EAPCET Physics. Questions from this chapter appear regularly in previous year papers. There are 507 practice questions available for this chapter.
How to prepare Current Electricity for TG EAPCET?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.

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