Semester 2Year 1 · EvenCore Subject★★★ Moderate
EC 101

Basic Electrical Engineering

Fundamentals of electrical circuits, DC and AC analysis, and basic electrical machines.

2Units
8Topics
4Credits
60hLecture hrs
100Max marks
Your Progress
0 / 8 topics
0% complete
Overview
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Why it matters
Every electronic device, every IoT sensor, every robot runs on electrical principles. Understanding circuits is fundamental to hardware design, embedded systems, and electronics.
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Placement relevance
Essential for core electronics companies (Intel, Qualcomm, Texas Instruments). For CS students doing embedded systems, robotics, or IoT roles. GATE EE/EC has high weightage.
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Prerequisites for
Digital Electronics · Microprocessors · Embedded Systems · Control Systems · Power Electronics · VLSI Design
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Recommended books
Basic Electrical Engineering by D.C. Kulshreshtha · Fundamentals of Electric Circuits by Alexander and Sadiku · Electrical Technology by B.L. Theraja
Curriculum — 2 Units
U1
Unit 1 · 4 Topics · 0% complete
DC Circuits
Key Formulae
Ohm's Law:V = IR (Voltage = Current × Resistance)
Power:P = VI = I²R = V²/R
KCL:Σ Currents entering node = Σ Currents leaving node
KVL:Σ Voltage drops around closed loop = 0
Ohm's Law
KCL & KVL
Network Theorems
Resistive Circuits
U2
Unit 2 · 4 Topics · 0% complete
AC Circuits
Key Formulae
AC Voltage:v(t) = Vm sin(ωt + φ); ω = 2πf
Impedance:Z = R + jX; X = XL - XC; XL = ωL, XC = 1/(ωC)
Power Factor:pf = cos φ = P / S; P = VI cos φ
AC Fundamentals
Phasors
Impedance
Power in AC Circuits
Previous Year Questions
Unit 12023 · End Semester10 marks
Using Thevenin's theorem, find the current through 6Ω resistor in the given circuit. Show equivalent circuit diagram.
Unit 22022 · End Semester8 marks
An AC series RLC circuit has R=10Ω, L=0.1H, C=100μF. Find resonant frequency, impedance at resonance, and quality factor.
Exam Strategy
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Draw circuit diagrams neatly
Every problem needs a circuit diagram. Label all components, currents, voltages. Clear diagram = easier grading = better marks. Use ruler for straight lines.
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Master network theorems
Thevenin, Norton, Superposition, Maximum Power Transfer — guaranteed 20-25 marks. Practice converting between Thevenin and Norton equivalents.
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Phasor diagrams for AC
AC problems MUST have phasor diagrams showing voltage-current relationships. Draw to scale if possible. Shows you understand phase relationships.
Related Subjects
Semester 3
Digital Electronics
EC 201
Semester 1
Engineering Physics
PHY 101