12. Electricity Class 10 Science [LATEST] Solutions Additional Questions With Solutions in English - CBSE Study
NCERT Solutions for Class 10 Science are carefully prepared according to the latest CBSE syllabus and NCERT textbooks to help students understand every concept clearly. These solutions cover all important 12. Electricity with detailed explanations and step-by-step answers for better exam preparation. Each Additional Questions With Solutions is explained in simple language so that students can easily grasp the fundamentals and improve their academic performance. The study material is designed to support daily homework, revision practice, and final exam preparation for Class 10 students. With accurate answers, concept clarity, and structured content, these NCERT solutions help learners build confidence and score higher marks in their examinations. Whether you are revising a specific topic or preparing an entire chapter, this resource provides reliable and syllabus-based guidance for complete success in Science.
Class 10 English Medium Science All Chapters:
12. Electricity
4. Additional Questions With Solutions
Chapter-12. Electricity
Q1: What is an electric circuit?
Ans: A continuous and closed path of an electric current is called an electric circuit.
Q2: Name the instrument which measures electric current in a circuit.
Ans: Ammeter.
Q3: In which order, an ammeter is connected in a circuit?
Ans: In series.
Q4: In which direction does the electric current flow in a circuit?
Ans: the electric current flows in the circuit from positive terminal of the cell to negative terminal of the cell.
Q5: Name the device which produces potential difference in a wire?
Ans: Cell or battery.
Q6: What is potential difference?
Ans: The electrons move only if there is a difference of electric pressure in a conducting metallic wire. This difference of electric pressure is called potential difference.
Q7: Two bulbs of 100 W and 25 W are connected in series to 200 V-AC mains. Which bulb glows brightly? Explain your observation.
Q8: Why does the element of a room heater become red hot but the lead wires remain cold?
Ans: The element of a room heater has high resistance. According to jule’s law of heating , increasing in resistance cause increasing in heat. While the device wire has not so highly resistance.
Q9: Calculate the number of electrons constituting one coulomb of charge.
Ans: 6 x1018 electrons.
Q10: State the Ohm’s Law.
Ans: The electric current flowing through a metallic wire is directly proportional to the potential difference V, across its ends provided its temperature remains the same. This is called Ohm’s law.
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