A greenish-blue spot appears around the wire connected to the terminal of the battery while testing the potato.

positive

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negative

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neutral

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Solution

The correct option is A positive
When an electrical current passes through a potato for a long time, a greenish-blue spot is found around the wire that is connected to the battery's positive end.
This can be used to identify the positive terminal of a battery or cell.

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Similar questions

Q. A greenish-blue spot appears around the wire connected to the terminal of the battery while testing the potato.

Q. When two copper wires are planted in a potato and connected to a battery, why greenish blue spot is found only around the wire connected to the positive terminal?

Q. Statement 1: The passage of an electric current through a conducting solution causes chemical reactions.
Statement 2: While testing a potato, the greenish blue spot is observed around the wire connected to the negative terminal of a cell.

Q.  When two copper wires are planted in a potato and connected to a battery, why greenish blue spot is found only around the wire connected to the positive terminal?

A thick wire is hanging from a wooden table. An anticlockwise magnetic field is to be produced around the wire by passing current through this wire by using a battery. Which terminal of the battery should be connected to the :

(a) top end of wire ?

(b) bottom end of wire ?

Give reason for your choice.

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A greenish-blue spot appears around the wire connected to the terminal of the battery while testing the potato.

The correct option is A positiveWhen an electrical current passes through a potato for a long time, a greenish-blue spot is found around the wire that is connected to the battery's positive end. This can be used to identify the positive terminal of a battery or cell.

The correct option is A positive
When an electrical current passes through a potato for a long time, a greenish-blue spot is found around the wire that is connected to the battery's positive end.
This can be used to identify the positive terminal of a battery or cell.