A) \[B=\frac{{{B}_{V}}}{{{B}_{H}}}\]
B) \[B={{B}_{V}}\times {{B}_{H}}\]
C) \[|B|=\sqrt{B_{H}^{2}+B_{V}^{2}}\]
D) \[B={{B}_{H}}+{{B}_{V}}\] (Where \[{{B}_{H}}=\]Horizontal component of earth's magnetic field; \[{{B}_{V}}\]= Vertical component of earth's magnetic field and B = Total intensity of earth's magnetic field)
Correct Answer: C
Solution :
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