Menu
Home / ECE / Digital Electronics :: Discussion

Discussion :: Digital Electronics

  1. A dynamic RAM cell which holds 5 V has to be refreshed every 20 ms so that the stored voltage does not fall by more than 0.5 V. If the cell has a constant discharge current of 0.1 pA, the storage capacitance of cell is

    2. A.
    4 x 10-6 F
    B.
    4 x 10-9 F
    C.
    4 x 10-12 F
    D.
    4 x 10-15 F

    View Answer

    Workspace

    View Answer

    Answer : Option D

    Explanation :

    Q = 20 x 10-3 x 0.1 x 10-12 = 2 x 10-15 C and .

Write your comments here:

Be The First To Comment