Question
Define Electric flux and write its S.I. unit.

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Find the neutral temperature and inversion temperature of a copper-iron thermocouple if the reference junction is kept at 0°C. Use the data in the table.
 
Metal with
a
b
lead (Pb)
$\mu\text{V}/^\circ\text{C}$
$\mu\text{V}/^\circ(\text{C})^2$
Aluminium
-0.47
0.003
Bismuth
-43.7
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Copper
2.76
0·012
Gold
2.90
0.0093
Iron
16.6
-0.030
Nickel
19.1
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Platinum
-1.79
-0.035
Silver
2.50
0.012
Steel
10.8
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In the circuit shown below R represents an electric bulb. If the frequency $\text{v}=\Big(\frac{\omega}{2\pi}\Big)$ of the supply is doubled, how should the values of C and L be changed, so that the glow of bulb remains unchanged?

 

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