Conceptual Questions - 10th Class Physics Chapter 14 Current Electricity. скачать в хорошем качестве

Conceptual Questions - 10th Class Physics Chapter 14 Current Electricity.

14.1 Why in conductors charge is transferred by free electrons rather than by positive charges? 14.2 What is the difference between a cell and a battery? 14.3 Can current flow in a circuit without potential difference? 14.4 Two points on an object are at different electric potentials. Does charge necessarily flow between them? 14.5 In order to measure current in a circuit why ammeter is always connected in series? 14.6 In order to measure voltage in a circuit voltmeter is always connected in parallel. Discuss. 14.7 How many watt-hours are there in 1000 joules? 14.8 From your experience in watching cars on the roads at night, are automobile headlamps connected in series or in parallel. 14.9 A certain flash light can use a 10ohm bulb or a 5ohm bulb. Which bulb should be used to get the brighter light? Which bulb will discharge the battery first? 14.10 It is impracticable to connect an electric bulb and an electric heater in series. Why? 14.11 Does a fuse in a circuit control the potential difference or the current?