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Current Electricity question

2021 · 17 Mar · Shift 2 · Q50
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  5. /2021 · 17 Mar · Shift 2 · Q50

Current Electricity question

2021 · 17 Mar · Shift 2 · Q50

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
Two cells of emf 2E and E with internal resistance r1 and r2 respectively are connected in series to an external resistor R (see figure). The value of R, at which the potential difference across the terminals of the first cell becomes zero is JEE Main 2021 (Online) 17th March Evening Shift Physics - Current Electricity Question 202 English
  1. A
    r1 −-− r2
  2. B
    r12−r2{{{r_1}} \over 2} - {r_2}2r1​​−r2​
  3. C
    r12+r2{{{r_1}} \over 2} + {r_2}2r1​​+r2​
  4. D
    r1 + r2
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