Gold Leaf Electroscope

What is a gold leaf electroscope used for?

• Detecting the presence of water

• Testing the acidity of a solution

• Detecting the presence and magnitude of electric charge

• Measuring temperature

Explain the working principle of a gold leaf electroscope.

• The gold leaf electroscope works on the principle of the repulsion between two similarly charged bodies.

• The gold leaf electroscope works on the principle of temperature affecting the movement of the gold leaf.

• The gold leaf electroscope works on the principle of gravity pulling the gold leaf down.

• The gold leaf electroscope works on the principle of attraction between two similarly charged bodies.

What happens to the gold leaves of an electroscope when it is charged?

• They disappear completely

• They shrink in size

• They turn blue

• They diverge or spread apart

How can the charge on a gold leaf electroscope be determined?

• By smelling the gold leaf

• By bringing a charged object close to the metal cap of the electroscope and observing the deflection of the gold leaf.

• By tasting the metal cap

• By listening to the sound it makes

What are the materials used to make a gold leaf electroscope?

• Metal rod, metal disc, glass jar, gold leaves

• Plastic rod, plastic disc, metal jar, silver leaves

• Steel rod, aluminum disc, glass jar, bronze leaves

• Wooden rod, glass disc, plastic jar, copper leaves

What is the significance of using gold leaves in a gold leaf electroscope?

• They are transparent and allow easy visualization of electric charges.

• They are heavy and difficult to deflect.

• They are very light and can easily be deflected by electric charges.

• They are magnetic and attract electric charges.

How does a gold leaf electroscope detect the presence of charge?

• By emitting sound waves

• By detecting changes in temperature

• By using a magnetic field

• By using the principle of electrostatic induction

Explain the process of charging a gold leaf electroscope by induction.

• Heating the electroscope with a flame

• Dropping the electroscope from a height

• Rubbing the electroscope with a cloth

• The process involves bringing a charged object near the metal cap of the electroscope.

What are the limitations of a gold leaf electroscope?

• Sensitivity to external magnetic fields, need for regular calibration, ability to measure exact charge

• Sensitivity to external electric fields, need for regular calibration, inability to measure exact charge

• Inability to detect electric fields, no need for calibration, ability to measure exact charge

• Resistance to external electric fields, infrequent need for calibration, ability to measure exact charge

How can a gold leaf electroscope be used to determine the nature of charge on an object?

• By observing the divergence or collapse of the gold leaves when the charged object is brought close to the metal plate of the electroscope.

• By smelling the charged object

• By measuring the weight of the charged object

• By listening to the sound it makes when the charged object is brought close