Comprehensive Questions | Chapter 14 | Current Electricity | Physics 10th | National Book Foundation

1. Define and explain the term electric current? What is difference between electronic current and conventional current? 2. How can you differentiate between emf and potential difference? What do you mean by the term emf? Is it really a force? Explain. 3. Explain Ohm’s law. What are its limitations? Differentiate ohmic and non ohmic conductor. Analyze IV characteristics graphs for metallic conductor, incandescent bulb and thermistor to decide for ohmic and non ohmic conductors. 4. Define resistance and its unit. What is cause of resistance? On what factors resistance of a metallic conductor depends?