1. What happens to the reading in the galvanometer when a current is passed through
coil 17
(a) Does not deflect. (b) it deflects. (c) it vibrates. (d) none of these.
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Answer:
b) it deflects
Explanation:
When plane of coil is 90 degree to the magnetic meridian, the magnetic field due to it is parallel to magnetic meridian. Hence, it shows zero and 180 degree deflections in the two current directions.
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