In Henry's experiment，the galvanometer indicated a voltage when______.A. the coil was connected to a batteryB. the coil was disconnected to a batteryC. neither A nor BD. both A and B
In Henry's experiment，the galvanometer indicated a voltage when______.
A. the coil was connected to a battery
B. the coil was disconnected to a battery
C. neither A nor B
D. both A and B
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