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Energy and Power

Q1:

A 6 V battery is connected to a 300  load. Under these conditions, it is rated at 40 Ah. How long can it supply current to the load?

A 1 h

B 200 h

C 2,000 h

D 10 h

ANS:C - 2,000 h

Simply it can solve by this method:

It's given : Ah=40 so, h=40/A.
TO find A=?
I=V/R, = 6/300=0.02A. Now put in above 'h' eq.
h=40/A, = 40/0.02= 2000 hours.



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