Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE MainPhysicsCurrent Electricity

Consider a resistor network connected to a DC voltage source across terminals A and B . The network consists of 10 identical resistors, each of resistance R . The input terminal A is connected via a resistor to node C . From node C , the circuit splits into a rhombus-like structure with a top node E , a bottom node F , a center node O , and a right node D . Resistors are connected along CE , ED , CF , FD , CO , OD ,

Options

  1. A9
  2. B3
  3. C4
  4. D1 9

Correct answer

A. 9

Step-by-step solution

Let the total current entering terminal A be I . This entire current flows through the input resistor between A and C . The power dissipated in this resistor is P_ AC = I^2 R . At node C , the current splits into three paths: C E D , C O D , and C F D . Due to the symmetry of the network about the horizontal axis passing through A, C, O, D, B , the nodes E , O , and F are at the same potential ( V_E = V_O = V_F ). Consequently, no current flows through the vertical resistors EO and FO , and they can be removed from

Practice Current Electricity on Quantrex Academy →

More from Current Electricity

A metal wire of cross-sectional area 0.5 mm ^2 and length 100 m is connected across a battery of e.m.f. 2 V and internal resistance 1 . The density, atomic mass and electrical cond 2026As shown in the figure, the resistance of a galvanometer G can be found by the half-deflection method. Here the resistance R₂ is adjusted such that when the key K is closed the def 2026The stored charge in the capacitor in steady state of the following circuit is ________ C. 2026A moving coil of galvanometer when shunted with 2 , resistance gives a full scale deflection for a current of 500 mA. When a resistance of 470 , is connected in series it gives a f 2026Two cells of emfs 1 V and 2 V and internal resistance 2 , and 1 , , respectively connected in parallel, gave a current of 1 A through an external resistance. If the polarity of one 2026Refer to the circuit diagram given below. The heat generated across the 6 , resistance in 100 second is 100 J. The value of is _______. (Nearest integer) 2026In an experiment to determine the resistance of a given wire using Ohm's law, the voltmeter and ammeter readings are noted as 10 V and 5 A , respectively. The least counts of voltm 2026Under steady state condition the potential difference across the capacitor in the circuit is _______ V. 2026 Full Current Electricity list All JEE Main PYQs