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Effects of electric current

Maharashtra Board · Class 10 · Science

Quick revision notes for Effects of electric current — Maharashtra Board Class 10 Science. Key concepts, formulas, and definitions for last-minute revision.

45 questions40 flashcards5 concepts

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Key Topics to Revise

1

Energy Transfer in an Electric Circuit

  • A cell gives energy to charges in a circuit.
  • When charge Q moves from A to B through a resistor, work done is V_AB × Q.
  • This electrical energy is converted into heat in the resistor.
2

Heating Effect of Electric Current

  • When current flows through a resistor, heat is produced.
  • Heating appliances use conductors with higher resistivity.
  • Nichrome is used in heater-cookers because it has higher resistivity.
3

Magnetic Effect of Electric Current

  • A current-carrying wire produces a magnetic field around it.
  • Oersted observed in 1820 that a magnetic needle near a current-carrying wire turns.
  • The magnetic field around a straight conductor becomes weaker as distance increases, if current stays the same.
4

Rules for Direction of Magnetic Field and Force

  • Right hand thumb rule tells the direction of magnetic field around a straight conductor.
  • Thumb shows current direction; curled fingers show magnetic field direction.
  • This rule is also called Maxwell's cork-screw rule.

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Full Notes

Key Concepts

When charge moves from one pointElectrical power is the rate atWhen current flows through a resistorHeat produced in a resistor1 kWh = 1000 W ×

Frequently Asked Questions

What are the important topics in Effects of electric current for Maharashtra Board Class 10 Science?
Effects of electric current covers several key topics that are frequently asked in Maharashtra Board Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Effects of electric current — Maharashtra Board Class 10 Science?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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