The wire of a platinum resistance thermometer has d ...
The wire of a platinum resistance thermometer has d resistance of 3.5\(\Omega\) at 0 °C and 10.52\(\Omega\) at 100°C. Calculate the temperature of the wire when its resistance is 7.5\(\Omega\).
78 °C
25 \(^o\)C
30\(^o\)C
57 \(^o\)C
Correct answer is D
Using the formula
t = \(\frac{R - R_0}{R_{(100)} - R_0} \times 100^oC\)
t = \(\frac{7.5 - 3.5}{10.5 - 2..5} \times 100^oC\)
= \(\frac{4}{7} \times 100\)
= 57.14\(^o\)C
~ 57\(^o\)C
A 40KW electric cable was uses to transmit electricity through a resistor of resistance 2.00Ω ...
The region around a magnet in which magnetic force can be expressed is known as ...
The function of the magnanese (IV) oxide in a leclanche cell is to ...
The velocities of light in air and glass are 3.0 x10\(^8\)ms\(^{-1}\) and 1.8 \(\times \)10\(^8...
As a bicycle Tyre was being pumped up, it was noticed that contrary to Boyle's law the volume in...