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AP EAMCET202317 May 2023Evening ShiftPhysicsCurrent ElectricityActual

Two square shaped metal plates of A and B of same thickness ( t ) and of same material are connected as shown in the figure. The side of B is twice that of A . If the resistance of A and B are R_A and R_B respectively then R _ A R _ B is

Options

  1. A1 2
  2. B2
  3. C1
  4. D4

Correct answer

C. 1

Step-by-step solution

L _ A = L and L _ B =2 ~L then A_A=A and A_B=2 A By the formula of resistance aligned & R= L A & R_A R_B = L_A A_B L_B A_A = L 2 L 2 A A =1 aligned

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