AP EAMCET202420 May 2024Evening ShiftPhysicsCurrent ElectricityActual
A straight wire of resistance R is bent in the shape of a square. A cell of emf 12 V is connected between two adjacent corners of the square. The potential difference across any diagonal of the square is
Options
- A8 V
- B18 V
- C6 V
- D12 V
Correct answer
A. 8 V
Step-by-step solution
aligned & R_ A D = 3 R 4 R 4 R = 3 R 16 & I= V R_ A D = 12 3 R 16 = 64 R & I₁= ( R 4 R ) I = & 1 4 64 R = 16 R & V_ A C =I₁ ( R 2 )= 16 R R 2 =8 V aligned