Question

In given figure:
() What will happen when current in coil-1 is changed?
(11) Which device is used to detect the current?
(iii) From coil-1 and coil-2 which is the secondary coil?​

Answer 1

Answer:

1. When the current in coil A is changed, the magnetic field around it also changes. As the coil B is placed very close to the coil A, the magnetic field lines around B coil also changes due to this as current is induced in it. (i) magnetic field produced around a straight conductor carrying current.
2. galvanometers
3. A galvanometer is an electro mechanical instrument for detecting and measuring electric current. The most common use of galvanometers was as analog measuring instruments, called ammeters, used to measure the direct current (flow of electric charge) through an electric circui

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