Question 9: Why we use Kirchhoff’s law for circuit problems solution? Explain its rules for circuit solution by giving proper example. Answer Most often we…
Question 4: Explain the terms: emf, internal resistance and terminal potential difference of a battery. ANSWER Electromotive force (emf) The energy per unit charge supplied…
Question 5: Explain the construction of rheostat. How is it used as (a) control the current (b) as potential divider? ANSWER A special type of…
Question 6: What is wheat stone bridge? Explain with diagram the balancing, the principle and the working of this bridge. ANSWER Wheatstone Bridge It is…
Question 7: What is potentiometer? Explain the principle, construction and working. What is the advantage of using potentiometer for measuring potential difference? ANSWER Potentiometer A…
Question 8: What is thermocouple? Explain the working of thermocouple by drawing its diagram. By sketching curve explain the variation in thermoelectric emf with temperature.…
Physics, Chap 2, Comprehensive Questions PHYSICS Class 12Comprehensive Questions Chapter 12 Question 1Describe the concept of steady current as a flow of positive, negative charge…
Question 2: Explain the electronic current in a metallic wire as due to the drift of free electrons in the wire. ANSWER Definition of current…