Write the following steps of an experiment in a sequential order to show that a current carrying conductor sets up a magnetic field around it.
(a) Pass the insulted copper wire through the small hole at the centre of the carboard and perpendicular to it.
(b) Paste a white paper on a rectangular cardboard and make a small hole at its centre.
(c) Connect this wire to a battery, a switch and a variable resistor in series.
(d) Clamp this cardboard to a stand in a horizontal position and sprinkle some iron filings over it.
(e) Now, when the circuit is closed, the iron filings on the carboard form concentric circles around the wire.

b d a c e

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b a c e d

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a d b e c

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e d a b c

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Solution

The correct option is A $b d a c e$
The experiment must carry as follows-
(b) Paste a white paper on a rectangular cardboard and make a small hole at its centre.
(d) Clamp this cardboard to a stand in a horizontal position and sprinkle some iron filings over it.
(a) Pass the insulted copper wire through the small hole at the centre of the carboard and perpendicular to it.
(c) Connect this wire to a battery, a switch and a variable resistor in series.
(e) Now, when the circuit is closed, the iron filings on the carboard form concentric circles around the wire.

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