Advertisements
Advertisements
Question
A ______ can be detected with an electroscope.
Options
always repulsion
always attraction
displacement of negative charge
displacement of positive charge
atom
molecule
steel
copper
plastic
inflated balloon
charged object
gold
Advertisements
Solution
A charged object can be detected with an electroscope.
Explanation:
This instrument is used to detect electrical charge (positive or negative). When an object is electrically charged, its reaction in the electroscope indicates whether the object is charged or not. The electroscope has a filament or blades, which can move closer or farther from each other when charged, thus indicating the charge.
RELATED QUESTIONS
There is ______ between like charges.
A lightning conductor is made of a ______ strip.
There is ______ when opposite electric charge come near each other.
Rubbing of comb with hair
Electric field lines ______ from positive charge and ______ in negative charge.
On what factors does the electrostatic force between two charges depend?
Exercise.
Rubbing a comb on hair makes the comb get – 0.4C.
- Find which material has lost electron and which one gained it.
- Find how many electrons are transferred in this process.
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.
How many electrons accumulate to make 1C of electric charge?
