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Standard X

Physics

Domestic Electric Circuits

Which stateme...

Question

Which statement is wrong from the following?

The earthing wire is green coloured

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In India, current flowing through wire is AC and its frequency is

50 H z

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In India, voltage between two wires is

110 V

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T.V., tube light, bulbs are connected with

5 A

line

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Solution

The correct option is C In India, voltage between two wires is $110 V$
In India, the voltage between two wires is $220 V$ . So, C is wrong. All other statements are correct.

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Q. Wires A and B are identical except that each is made from a different material The one end of wire A is connected to one end of wire B The two remaining ends are connected across a battery and current flows through the two wires Which statement concerning this situation is true ?

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.
Which of the following statement is false?

Write true or false for each statement:

(a) A fuse wire has a high melting point.

(b) Flow of protons constitutes electric current.

(d) S.I. unit and commercial unit of electrical energy are same.

(e) Overloading of electric current in circuits can lead to short circuiting.

(f) Our body can pass electricity through it.

(g) The metallic cases of all appliances are insulators of electricity.

(h) The earth wire protects us from an electric shock.

(i) A switch should not be touched with wet hands.

(j) All electrical appliances in a household circuit work at the same voltage.

(k) In a cable,the green wire is the live wire.

(l) A fuse is connected to the live wire.

(m) A switch is connected to the neutral wire.

Q. The same amount of current flows through the connecting wires and the bulb filament. However, it is only the filament that glows. Why?

A set up consisting of a bulb, salt solution and a magnetic compass is arranged in such a manner that bulb and salt solution come in between the electric wires connected to the cell and hence complete the circuit, magnetic compass is wrapped with the connecting wires. When switched on, current flows through salt solution, the bulb glows and the needle deflects. Which of the following effects of current is observed?

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Which statement is wrong from the following?

The correct option is C In India, voltage between two wires is 110VIn India, the voltage between two wires is 220V. So, C is wrong. All other statements are correct.

The correct option is C In India, voltage between two wires is $110 V$
In India, the voltage between two wires is $220 V$ . So, C is wrong. All other statements are correct.