Q 1 :    

An electric field is given by (6i^+5j^+3k^)N/C. The electric flux through a surface area 30i^  m2  lying in YZ-plane (in SI unit) is              [2024]

  • 180

     

  • 90

     

  • 150

     

  • 60

     

(A)       E=(6i^+5j^+3k^)N/C

             A=30i^ m2

            Electric flux, ϕ=E·A

            ϕ=(6i^+5j^+3k^)·(30i^)=180Nm2C

 



Q 2 :    

Three infinitely long charged thin sheets are placed as shown in figure. The magnitude of electric field at the point P is xσε0. The value of x is _____ (all quantities are measured in Sl units).              [2024]



(2)       E=E1+E2+E3

            =σ2ε0(-i^)+-2σ2ε0(i^)+-σ2ε0(i^)

             =-4σ2ε0i^=2σε0(-i^)