Wired Faculty
The current will flow at the cold junction of a thermocouple thermometer in which Fe and Cu are used from Cu to Fe (Sb, Fe, Zn, Ag, Au, Pb, Mn, Cu, Pt, Ni, Bi).
A wire of length 10 cm, carrying 10 Amp of current is placed at an angle of 53° with respect to a magnetic field B of strength 0.1 Tesla. Find the force
experienced by the wire [
]
Here,
Length of wire, l = 10 cm = 0.10 m
Current, i = 10 Amp.
θ = 53°
Magnetic field, B = 0.1 T
F = ?
sin 53o = 4/5
F = Bil sin 
= 
= 0.08 N
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In ferromagnetic material the phenomena of lagging of flux density B behind the magnetising field H subjected to a cycle of magnetization is called hysterisis.
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The magnetic field intensity of solenoid current i is given by X for A1
= 2.1 x 10-3
% increase = 2.1 x 10-3 x 100
= .21%
An ideal inductor is obtained by using thick wire having low resistance.
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Mock Test Series
