JEE Main201911 Jan 2019Morning ShiftPhysicsCurrent ElectricityActual
In a Wheatstone bridge (see fig.), Resistances P and Q are approximatelyequal. When R=400 , the bridge is balanced. On interchanging P and Q , the value of R , for balance, is 405 . The value of Y is close to
Options
- A401.5 ohm
- B404.5 ohm
- C403.5 ohm
- D402.5 ohm
Correct answer
D. 402.5 ohm
Step-by-step solution
402.5 ohm
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
