A wire loop is placed right above another wire loop. If the current flows in the upper loop anticlockwise and is increasing, the current in the lower loop will
Answer:
A. flow anticlockwise and be decreasing.
B. flow anticlockwise and be increasing.
C. flow clockwise and be increasing.
D. stay zero.
With explanation please.
Physics MC
2007-12-30 4:13 am
回答 (1)
2007-12-30 5:28 am
✔ 最佳答案
The Answer is CWhen a current is flowing through the upper wire loop with increasing amplitude, an increasing magnetic field is generated by this wire loop.
By Lenz's Law, the lower wire loop will generate a magnetic field by inducing a current to oppose the changing magnetic field experienced.
Thus, a current is induced in the lower wire loop clockwisely.
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