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प्रश्न
A lightning conductor is made of a ______ strip.
पर्याय
always repulsion
always attraction
displacement of negative charge
displacement of positive charge
atom
molecule
steel
copper
plastic
inflated balloon
charged object
gold
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उत्तर
A lightning conductor is made of a copper strip.
संबंधित प्रश्न
______ is responsible for generation of electric charge in an object.
Rubbing of comb with hair
Match the following.
| 1. | Electric charge | a. | ohm |
| 2. | Potential difference | b. | ampere |
| 3. | Electric field | c. | coulomb |
| 4. | Resistance | d. | newton per coulomb |
| 5. | Electric current | e. | volt |
What are positive and negative ions?
As electrons are revolving in the ______ of an atom they can be easily removed from an atom and also added to it.
If an electron is added in excess to an atom then the atom is ______ charged.
The excess of electrons makes an object negative and ______ of electrons makes it positive.
A comb rubbed with hair and brought near pieces of paper attracts them, because both comb and paper get similarly charged.
Calculate the charge passing through a lamp in 2 minutes if the current is 3A.
Define electric field.
