19. Find the value of the maximum power transferred to the load resistance in the circuit shown in Figure 8-66. 2 k2 2k? 2k 10 v (+ Z R, 2k2

2. A bank of nickel-cadmium cells is used as the emergency lighting supply for a hospital. There are 100 cells connected in series and each has an A-hr rating of 120 A-hr. The bank has to be replaced, and the manufacturer is no longer supplying nickel-cadmium cells. It is decided to replace the cells with lead-acid cells. How many lead-acid cells will be required if each has an A-hr rating of 60 A-hr, and how should they be connected?

Worked Example 1-1 Express the following numbers in scientific notation: a) 408.00 b) 0.007956

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