Related InterviewSolutions

• Name a substance of which the resistance remains almost unchanged by the increase in temperature.
• The graph shown here shows the variation of terminal potential difference V, across a combination of three cells in series to a resistor, versus current i:(i) Calculate the emf of each cell.(ii) For what current i, will the power dissipation of the circuit be maximum?
• The plot of the variation of potential difference across a combination of three identical cells in series, versus current is shown below. What is the emf and internal resistance of each cell?
• The plot of the variation of potential difference across a combination of three identical cells in series, versus current is shown alongside. What is the emf and internal resistance of each cell?
• Nichrome and copper wires of same length and same radius are connected in series. Current I is passed through them. Which wire gets heated up more? Justify your answer.
• What will be the equilibrium resistance between points A & D(A) 10 Ω(B) 20 Ω(C) 30 Ω(D) 40Ω
• Two heater wires of equal lengths are first connected in series and then in parallel. The ratio of heat produced in two cases is(A) 2:1(B) 1:2(C) 4:1(D) 1:4
• What is the net resistance between A and B?(A) R(B) 5R(C) 3R(D) 6R
• The rate of flow of charge through any wire is called …………
• The net flow of charge at any point in the conductor is ………