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QJEEM20Ph930d: JEE Main 2020 Physics - Class 12 JEEM20Ph930d Solution: In the circuit, given in the figure currents in different…

In the circuit, given in the figure currents in different branches and value of one resistor are shown. Then potential at point B with respect to the point A is : JEE Main 2020 (Online) 5th September Evening Slot Physics - Current Electricity Question 211 English

Multiple Choice Options

  • A +2 V
  • B -2 V
  • C +1 V
  • D -1 V

Step-by-Step Verified Solution

JEE Main 2020 (Online) 5th September Evening Slot Physics - Current Electricity Question 211 English Explanation
Let us assume the potential at A = VA = 0

Now at junction C, According to KCL

i1 + i3 = i2

⇒ 1 A + i3 = 2 A

⇒ i3 = 1 A

Now Analyse potential along ACDB,

VA + 1 + i3(2) – 2 = VB

⇒ 0 + 1 + 1(2) – 2 = VB

⇒ VB = 3 – 2 = 1 V

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