Question Answers
Sahay Sir > Question Answers
A current I is passing through a wire having two sections P and O of uniform diameters d and d/2 respectively. If the mean drift velocity of electrons in section P and Q is denoted by vP and vQ respectively, then
19
Sep
A current I is passing through a wire having two sections P and O of uniform diameters d and d/2 respectively. If the mean drift velocity of electrons in section P and Q is denoted by vP and vQ respectively, then A steady current flows in a metallic conductor of non- uniform cross - section. [...]
A steady current flows in a metallic conductor of non- uniform cross – section. The quantity constant along the length of the conductor is /are
19
Sep
A steady current flows in a metallic conductor of non- uniform cross – section. The quantity constant along the length of the conductor is /are A steady current flows in a metallic conductor of non- uniform cross - section. The quantity constant along the length of the conductor is /are September 19, 2020 Category: Uncategorised [...]
In the above question, the resistance between the square faces is
19
Sep
In the above question, the resistance between the square faces is In the above question the resistance between the square faces is September 19, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Dimensions of a block are 1 cm x 1cm x 100 cm. If specific resistance of its material is 3 x 10 ^-7 ohm -m, then the resistance between the opposite rectangular faces is
19
Sep
Dimensions of a block are 1 cm x 1cm x 100 cm. If specific resistance of its material is 3 x 10 ^-7 ohm -m, then the resistance between the opposite rectangular faces is Dimensions of a block are 1 cm x 1cm x 100 cm. If specific resistance of its material is 3 x [...]
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
19
Sep
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 and the charged capacitor is [...]
The V -i graph for a conductor at temperature T1 and T2 are as shown in the figure. (T2 -T1 ) is propotional to
19
Sep
The V -i graph for a conductor at temperature T1 and T2 are as shown in the figure. (T2 -T1 ) is propotional to The V -i graph for a conductor at temperature T1 and T2 are as shown in the figure. (T2 -T1 ) is propotional to September 19, 2020 Category: Uncategorised (JEE Advanced [...]
The resistance R1 of a conductor varies with temperature t as shown in the figure. If the variation is represented by R1 = R0 [ 1+ alpha t + bita t^2 ], then
19
Sep
The resistance R1 of a conductor varies with temperature t as shown in the figure. If the variation is represented by R1 = R0 [ 1+ alpha t + bita t^2 ], then The resistance R1 of a conductor varies with temperature t as shown in the figure. If the variation is represented by R1 [...]
I -V characteristic of a copper wire of length L and area of cross section A is shown in the figure. The slope of the curve becomes
19
Sep
I -V characteristic of a copper wire of length L and area of cross section A is shown in the figure. The slope of the curve becomes I -V characteristic of a copper wire of length L and area of cross section A is shown in the figure. The slope of the curve becomes September [...]
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
19
Sep
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 B C and D Variation of current passing through a conductor as the voltage [...]
Following figures show four situations in which positive and negative charges move horizontally through a region and give the rate at which each charge moves. Rank the situations according to the effective current through the region greatest first.
19
Sep
Following figures show four situations in which positive and negative charges move horizontally through a region and give the rate at which each charge moves. Rank the situations according to the effective current through the region greatest first. and the charged capacitor is connected to the uncharged capacitor C2 by closing S2. C2 = 3 [...]