If the measured circuit current is zero, it is likely that the ________
A) circuit voltage is very high B) resistance is very low
C) circuit has a short D) voltage is turned off
D
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What will be an ideal response?
A thermistor is a nonlinear device which changes its terminal resistance value as its surrounding temperature changes. The resistance and temperature generally have a relation in the form of Rth(T ) = R0e??(T?T0) where Rth = resistance at temperature T, ? R0 = resistance at temperature T0 = 298 K, ? ? = material constant, K?1 T, T0 = absolute temperature, K a. If R0 = 300? and ? = ?0.01 K?1, plot Rth(T ) as a function of the surrounding temperature T for 350 ? T ? 750. b. If the thermistor is in parallel with a 250-? resistor, find the expression for the equivalent resistance and plot Rth(T ) on the same graph for part a.
What will be an ideal response?
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What will be an ideal response?