9. An RTD produces self-heating temperature error because (a) the Wheatstone bridge circuit is not balanced (b) the voltage applied to the circuit is too large (c) the electrical power is dissipated over RTD

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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?

What is the area of the pn junction formed by either the source or the drain?