B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with an...

B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with answers.

(H) An ohmmeter applies a known voltage to the thermistor and measures the current drawn, I. The resistance is then calculated internally from this voltage and current. To prevent a short circuit between the leads from causing an extremely high current, a small resistor, Rint, is placed in series with the leads, as indicated in Figure.

FIGURE Ohmmeter circuit.

If the short circuit current is 10 A, then what is the value of Rint?

Using the value of Rint, find the error percentage given the actual value of R is:

a. R = 0.2 Ω

b. R = 5 Ω

c. R = 10 Ω

d. R = 50 Ω

e. R = 100 Ω