Direction of emf and load circuit current are not same, Physics 12 … msa

Question 9: Does the direction of emf provided by a battery depend on the direction of the current flowing through the battery? Answer The source…

index-sq-ch2-p12

PHYSICSClass 12 Conceptual QuestionsChapter 12 Question 1 Why it is not possible to measure the drift speed of electrons by timing their travel along a…

drift-speed-of-electron

Question 1: Why it is not possible to measure the drift speed of electron by timing their travel along a conductor? ANSWER It is not…

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.…

charge-flow-from-battery

Question 3: A heavy duty battery of a truck maintains a current of 3 A for 24 hours. How much charge flows from the battery…

internal-resistance-of-emf-is-ignored

Question 4: While analyzing a circuit, the internal resistance of emf sources is ignored. Why? ANSWER Any source of emf has an internal resistance r.…

terminal-p-demf

Question 5: Under what circumstances can the terminals P.D of a battery exceeds its emf? ANSWER Terminal Potential Difference can be small, equal or more…

difference-between-p-d-and-emf

Question 6: What is the difference between emf and P.D? ANSWER Emf P.D (1) emf is the voltage across the terminals of a battery when…

loop-rule-and-junction-rule

Question 7: The loop rule is based on the conservation of energy principle and the junction rule on the conservation of charge principle. Explain how…

temperature-and-resistance

Question 8: Why rise in the temperature of a conductor is accompanied by a rise in the resistance? ANSWER Resistance is the opposition offered by…