The Electricity chapter in Science Class 10 includes important formulas related to electric current, voltage, resistance, electric power, and electrical energy. These formulas are essential for solving numerical problems in board exams. Checking all formulas and key points below will help students revise quickly, understand concepts clearly, and improve accuracy and confidence during exams.
Science Class 10 Electricity All Formulas & Formula Sheet (CBSE 2026)
Get all Class 10 Electricity formulas in one place. Download formula sheet PDF, SI units, current, power & energy formulas for quick revision. Updated for CBSE 2026 exams.
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The Electricity chapter in Class 10 Science focuses on understanding electric current, potential difference, resistance, electric power, and electrical energy. To solve numericals easily, students must remember key electricity formulas such as Ohm’s Law, resistance combinations, and power equations.
A well-organized Class 10 electricity formula sheet helps in quick revision and improves problem-solving speed in board exams. These formulas are strictly based on the NCERT syllabus and are frequently used in both theory-based and numerical questions. Revising all electricity formulas regularly builds strong conceptual clarity and boosts confidence before exams.
Science Class 10 Electricity – All Formulas & Important Points
| Science Class 10 Electricity – All Formulas & Important Points |
||
| Quantity | Formulas | Unit |
| Current I | I = Q / t
Q = Charge t = time taken |
Amperes (A) |
| Voltage V | V = E / Q
or V = W / Q E = Energy, W = Work done |
Volts (V) |
| Resistance R | R = ρl / A
ρ = Resistivity, l = length, A = Area or, R = V / I |
Ohm (Ω) |
| Power P | P = VI | Watts (W) |
| Conductivity σ | sigma = 1 / ρ | Siemens per meter (S/m) |
Electricity and its Effect (notations)
Electricity and its effect involve different physical quantities such as current, voltage, resistance, power, and energy, each represented using standard notations. Understanding these symbols is important for reading formulas and solving numericals correctly. Since the table below provides all notations and meanings in detail, students should carefully refer to it for quick revision and better clarity before exams.
| Electricity and its Effect (notations) |
||
| Physical Quantity | Symbols | SI unit |
| Voltage (potential difference) | V | Volt(V) |
| Power | P | Watt(W) |
| Charge | Q | Coulomb (C) |
| Work or Energy | W | Joule (J) |
| Resistance | R | Ohm Ω |
| Current | I | Ampere (A) |
| Resistivity | ρ | Ohm metre (Ω m) |
Current:
The rate of charges (Q) through a conductor is called current (I) and is given by.
current = charge/time
I = Q/t.
The SI unit of current is ampere (A).
Electromotive force: The potential difference at the terminals of cells in an open circuit is called electromotive force (emf) and is denoted by letter E.
Potential difference is the work done in bringing a unit charge from one place to another.
Ohms law: At any constant temperature the current (I) flowing through a conductor is directly proportional to the potential difference (V) across it. Mathematically,
Where R -Resistance, V – Voltage (P.D.), I - Current
To be good in Science do read NCERT text book and solve questions given in the exercise with the help of NCERT solutions for class 10 Science . All NCERT Solutions are prepared by teachers of Physics Wallah.
Download Free Pdf sheet of Electricity it consist of Short notes and key points of Physics for class 10 from the link given below.
Science Class 10 Electricity All Formulas FAQs
What are the important electricity formulas for Class 10?
The important electricity formulas for Class 10 include Ohm’s Law (V = IR), electric power (P = VI), electric energy (E = Pt), and resistance formulas for series and parallel circuits. These formulas are essential for numericals.
Where can I find all formulas of electricity Class 10 in one place?
You can find all formulas of electricity Class 10 in a well-structured Class 10 electricity formula sheet, which includes formulas for current, voltage, resistance, power, and energy in one revision-friendly list.
Why is an electricity Class 10 formula sheet useful for exams?
An electricity Class 10 formula sheet helps students revise quickly before exams and avoid confusion while solving numericals. It also improves speed and accuracy in board exam questions.
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