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Which subjects does GyanAI cover?

GyanAI covers all 18 CBSE subjects: Mathematics, Physics, Chemistry, Biology, English, Hindi, History, Geography, Political Science, Economics, Accountancy, Business Studies, Computer Science, Physical Education, Psychology, Sociology, Fine Arts, and more. It supports Class 6 through Class 12 across Science, Commerce, and Humanities streams.

Can GyanAI help with JEE and NEET preparation?

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GyanAI uses advanced AI (powered by Google Gemini) to understand student questions and generate detailed, curriculum-aligned explanations. Students can type any question, upload a problem image, or choose from common textbook problems. The AI provides step-by-step solutions, explains underlying concepts, and suggests follow-up topics to strengthen understanding.

Does GyanAI support Hindi medium CBSE students?

Yes, GyanAI supports students studying in Hindi medium and can provide explanations in both Hindi and English. The platform covers Hindi literature, Hindi grammar, and all other subjects for Hindi medium Class 6-12 CBSE students.

State Ohm's Law and write its formula.

Ohm's Law states: At constant temperature, the current flowing through a conductor is directly proportional to the potential difference across it. Formula: V = IR, where V = potential difference (volts), I = current (amperes), R = resistance (ohms).

What factors affect the resistance of a conductor?

Resistance depends on: (1) Length — longer conductor has more resistance (R ∝ L); (2) Cross-sectional area — thicker conductor has less resistance (R ∝ 1/A); (3) Material/Resistivity — different materials have different resistivity (ρ); (4) Temperature — resistance generally increases with temperature. Formula: R = ρL/A.

What is the difference between series and parallel circuits?

In series: resistors are connected end-to-end; same current flows through all; total resistance R = R₁+R₂+R₃ (always more than any single resistance). In parallel: resistors share same terminals; same voltage across all; 1/R = 1/R₁+1/R₂+1/R₃ (total resistance less than any single resistance). Household appliances use parallel connections.

Ohm's Law and Resistance

Electricity • Class 10 Science • NCERT • CBSE

Ohm's Law states that the current (I) flowing through a conductor is directly proportional to the potential difference (V) across it, at constant temperature: V = IR. Resistance (R) is measured in ohms (Ω) and depends on the material, length, and cross-sectional area of the conductor.

Key Formulas

V = IR (Ohm's Law)
R = ρL/A (Resistance formula)
R_series = R₁ + R₂ + R₃
1/R_parallel = 1/R₁ + 1/R₂ + 1/R₃
P = VI = I²R = V²/R (Electric Power)
H = I²Rt (Joule's Law of Heating)

Frequently Asked Questions

State Ohm's Law and write its formula.: Ohm's Law states: At constant temperature, the current flowing through a conductor is directly proportional to the potential difference across it. Formula: V = IR, where V = potential difference (volts), I = current (amperes), R = resistance (ohms).
What factors affect the resistance of a conductor?: Resistance depends on: (1) Length — longer conductor has more resistance (R ∝ L); (2) Cross-sectional area — thicker conductor has less resistance (R ∝ 1/A); (3) Material/Resistivity — different materials have different resistivity (ρ); (4) Temperature — resistance generally increases with temperature. Formula: R = ρL/A.
What is the difference between series and parallel circuits?: In series: resistors are connected end-to-end; same current flows through all; total resistance R = R₁+R₂+R₃ (always more than any single resistance). In parallel: resistors share same terminals; same voltage across all; 1/R = 1/R₁+1/R₂+1/R₃ (total resistance less than any single resistance). Household appliances use parallel connections.

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