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Energy and Power - Engineering

Q1:

A given power supply is capable of providing 6 A for 3.5 h. Its ampere-hour rating is

A 0.58 Ah

B 2.1 Ah

C 21 Ah

D 58 Ah

ANS:C - 21 Ah

IH = IT.

Where Ih Means that Ampere Hours
And IT for;

I = Ampere used (6).
T = Time used for(3.5).
Ih = 6 * 3.5.
Ih = 21ah.