At a place the value of BH and BV are 0.4×10−4and 0.3×10−4respectively. The resultant earths magnetic field is :
0.5×10−4T
10−4T
2×10−4T
5×10−4T
A
2×10−4T
B
5×10−4T
C
0.5×10−4T
D
10−4T
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Solution
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I=√BH2+BV2
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