PHYSICS
Class 12
Conceptual Questions
Chapter 12
 Question 1 Why it is not possible to measure the drift speed of electrons by timing their travel along a conductor?See answer Question 2 The relationship R = V/I tells us that the resistance of a conductor is directly proportional to the potential difference applied to it. What do you think on this proportion? See answer Question 3 A heavy duty battery of a truck maintains a current of 3 amperes for 24 hours. How much charge flows from the battery during this time?See answer Question 4 While analyzing a circuit, the internal resistance of the source is ignored. Why? See answer Question 5 Under what circumstances, the terminal potential difference of a battery exceeds its emf? See answer Question 6 What is the difference between emf and P.D?See answer Question 7 The loop rule is based on the conservation of energy principle and the junction rule on the conservation of charge. Explain how these are based on these principles?See answer Question 8 Why rise in the temperature of a conductor is accomplanied by a rise in the resistance? See answer Question 9 Does the direction of emf provided by a battery depend on the direction of the current flowing through the battery? See answer

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