An n.t.c. thermistor and a resistor are connected as shown in the figure below.
The temperature of the thermistor is increased. State and explain the change, if any, to the reading on the voltmeter
The variation with the fractional change in length 
of the fractional change in resistance 
for a strain gauge is shown in the graph below.
The unstrained resistance of the gauge is 
. Calculate the new resistance of the gauge when it is extended to a strain of 0.020.
.
