Menu
Home / ECE / Exam Questions Paper :: Discussion

Discussion :: Exam Questions Paper

  1. Find E at P(1, 1, 1) caused by four identical 3 nC point charges located at P1(1, 1, 0), P2(- 1, 1, 0), P3(- 1, - 1, 0) P4(1, - 1, 0)

    2. A.
    21.58ax + 21.58ay + 12az V/m
    B.
    6.82ax + 6.82ay + 32.89az V/m
    C.
    -6.82ax - 6.82ay - 32.89az V/m
    D.
    -21.58ax - 21.58ay - 12az V/m

    View Answer

    Workspace

    View Answer

    Answer : Option B

    Explanation :

    E = 6.82ax + 6.82ay + 32.89az V/m

    r = ax + ay + az

    r1 = ax + ay

    r2 = - ax + ay

    r3 = - ax - ay

    and r4 = ax - ay

    ∴ r - r1 = az;

    r - r2 = 2ax + az;

    r - r3 = 2ax + 2ay + az

    r - r4 = 2ay + az

    = 6.8ax + 6.8ay + 32.9az .

Write your comments here:

Be The First To Comment