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question_answer1) Which of the adjoining graphs represents ohmic resistance [CPMT 1981; DPMT 2002]
question_answer2) Variation of current passing through a conductor as the voltage applied across its ends as varied is shown in the adjoining diagram. If the resistance (R) is determined at the points A, B, C and D, we will find that [CPMT 1988]
question_answer3) The voltage V and current I graph for a conductor at two different temperatures \[{{T}_{1}}\] and \[{{T}_{2}}\] are shown in the figure. The relation between \[{{T}_{1}}\] and \[{{T}_{2}}\] is [MP PET 1996; KCET 2002]
question_answer4) From the graph between current I and voltage V shown below, identify the portion corresponding to negative resistance [CBSE PMT 1997]
question_answer5) I-V characteristic of a copper wire of length L and area of cross-section A is shown in figure. The slope of the curve becomes [Orissa JEE 2003]
question_answer6) E denotes electric field in a uniform conductor, I corresponding current through it, \[{{v}_{d}}\] drift velocity of electrons and P denotes thermal power produced in the conductor, then which of the following graph is incorrect
question_answer7) The two ends of a uniform conductor are joined to a cell of e.m.f. E and some internal resistance. Starting from the midpoint P of the conductor, we move in the direction of current and return to P. The potential V at every point on the path is plotted against the distance covered (x). Which of the following graphs best represents the resulting curve
question_answer8) The resistance\[{{R}_{t}}\] of a conductor varies with temperature t as shown in the figure. If the variation is represented by \[{{R}_{t}}={{R}_{0}}[1+\alpha t+\beta {{t}^{2}}]\], then [CPMT 1988]
question_answer9) Variation of current and voltage in a conductor has been shown in the diagram below. The resistance of the conductor is.
question_answer10) Resistance as shown in figure is negative at [CPMT 1997]
question_answer11) For a cell, the graph between the potential difference (V) across the terminals of the cell and the current (I) drawn from the cell is shown in the figure. The e.m.f. and the internal resistance of the cell are
question_answer12) The graph which represents the relation between the total resistance R of a multi range moving coil voltmeter and its full scale deflection V is
question_answer13) When a current I is passed through a wire of constant resistance, it produces a potential difference V across its ends. The graph drawn between log I and log V will be
question_answer14) The V-i graph for a conductor at temperature \[{{T}_{1}}\] and \[{{T}_{2}}\] are as shown in the figure. \[({{T}_{2}}-{{T}_{1}})\] is proportional to
question_answer15) A cylindrical conductor has uniform cross-section. Resistivity of its material increase linearly from left end to right end. If a constant current is flowing through it and at a section distance x from left end, magnitude of electric field intensity is E, which of the following graphs is correct
question_answer16) The V-i graph for a conductor makes an angle \[\theta \] with V-axis. Here V denotes the voltage and i denotes current. The resistance of conductor is given by
question_answer17) A battery consists of a variable number 'n' of identical cells having internal resistances connected in series. The terminals of battery are short circuited and the current i is measured. Which of the graph below shows the relation ship between i and n
question_answer18) In an experiment, a graph was plotted of the potential difference V between the terminals of a cell against the circuit current i by varying load rheostat. Internal conductance of the cell is given by
question_answer19) V-i graphs for parallel and series combination of two identical resistors are as shown in figure. Which graph represents parallel combination
question_answer20) The ammeter has range 1 ampere without shunt. the range can be varied by using different shunt resistances. The graph between shunt resistance and range will have the nature
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