A car battery rated 45 A H is charged with a charger whose rating is…

Physics JAMB 2005

A car battery rated 45 A H is charged with a charger whose rating is 2.5A.How long will it take to charge the battery full?

  • 10 hrs
  • 18 hrs checkmark
  • 20 hrs
  • 25 hrs

The correct answer is: B

Explanation

For a car battery rated 45 AH, being charged by a charger of 2.5 A rating, the time for the battery to be fully charged is given by:
T = (45)/2.5 = 18 hrs
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