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Chapter 16 of 28
Formula Sheet

Electromagnetic WavesFormula Sheet

BITSAT · Physics

Free Electromagnetic Waves formula sheet for BITSAT Physics 2026 — all important formulas, equations, and constants for quick reference.

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A concise summary of Maxwell's four fundamental equations of electromagnetism: Gauss's Law for Electricity, Gauss's Law for Magnetism, Faraday's Law of Induction, and Ampere-Maxwell's Law, each with i
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Formula Sheet — Electromagnetic Waves

Important formulas and equations from Electromagnetic Waves for BITSAT Physics.

Formulas — Electromagnetic Waves

Displacement Current & Ampere's Law

ID = ε₀(dΦE/dt)
∮B⋅dl = μ₀[I + ε₀(dΦE/dt)]
c = 1/√(μ₀ε₀)

Maxwell's Equations

∮E⋅dS = q/ε₀
∮B⋅dS = 0
∮E⋅dl = -d/dt∮B⋅dS
∮B⋅dl = μ₀[I + ε₀(dΦE/dt)]

Electromagnetic Wave Properties

E = E₀sin(kz - ωt)
B = B₀sin(kz - ωt)
E/B = c or E₀/B₀ = c
v = 1/√(με)

Energy and Momentum in EM Waves

u = ε₀E²rms = B²rms/μ₀
uE = uB = u/2
p = U/c
Pressure = Intensity/c

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Frequently Asked Questions

What topics are covered in Electromagnetic Waves for BITSAT?
Electromagnetic Waves is an important chapter in BITSAT Physics. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: 8.1 Introduction and Maxwell's Contributions, 8.2 Displacement Current and Modified Ampere's Law, 8.3 Maxwell's Four Equations, 8.4 Electromagnetic Waves - Generation and Properties.
How important is Electromagnetic Waves for BITSAT?
Electromagnetic Waves is a frequently tested chapter in BITSAT Physics. Questions from this chapter appear regularly in previous year papers. There are 230 practice questions available for this chapter.
How to prepare Electromagnetic Waves for BITSAT?
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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Practice questions, revision notes, formula sheet and AI doubt-solver for BITSAT Physics.