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The diagram represents a primary coil P , carrying a steady current, and a secondary coil S, which is connected to a galvanometer G .

The diagram represents a primary coil

P

, carrying a steady current, and a secondary coil S, which is connected to a galvanometer

G

.\ The following steps are performed one after another.\ I.

P

is pushed rapidly into

S

\ II.

P

is held stationary inside

S

\ III.

P

is withdrawn rapidly from

S

\ IV.

P

is held stationary outside of

S

\ During which of these steps does

G

show a steady zero reading?\ I and III only\ II only\ II and IV only\ II and III only\ I only

image text in transcribed
The diagram represents a primary coil P, carrying a steady current, and a secondary coil S, which is connected to a galvanometer G. The following steps are performed one after another. I. P is pushed rapidly into S II. P is held stationary inside S III. P is withdrawn rapidly from S IV. P is held stationary outside of S During which of these steps does G show a steady zero reading? I and III only II only II and IV only II and III only I only

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