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What force causes the leaves in an electroscope to repel each other?
Wiki User
∙ 12y ago
Electrostatic charge.
Wiki User
∙ 12y ago
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Why do the leaves of an electroscope always diverge to the same extent when a charged body is brought in contact with its disc?
The electroscope has the little ball on top of the "input" rod. Dump some electrons on the ball and the charge will be distributed down inside to the little leaves. Electrons don't like each other. Law of electrostatics, ya know: opposites attract and likes repel. The electrons collect on the leaves and electrostatically push against each other. The electrostatic force is sufficient to move the light foil.
Can the leaves of a metal leaf electroscope be attracted to each other?
No. There is only one connection for the leaves. They are either charged (spread apart) or not charged (not spread apart).
Why do leaves of gold leaf electroscope expand when a charged body touches it?
They both get charged with the same polarity, and therefore repel each other.
When does the leaves of gold leaf electroscope attracts?
When two unlike charges for example, a positive [protons] and a negative [electrons] attract each other.
Looking at the electroscope describe how you can cause the two leaves at the bottom to repel each other and stay that way?
Bring a positive object near the top
Why do the leaves of an electroscope always diverge to the same extent when a charged body is brought in contact with its disc?
The electroscope has the little ball on top of the "input" rod. Dump some electrons on the ball and the charge will be distributed down inside to the little leaves. Electrons don't like each other. Law of electrostatics, ya know: opposites attract and likes repel. The electrons collect on the leaves and electrostatically push against each other. The electrostatic force is sufficient to move the light foil.
Why do the leaves of an electroscope repel each other when a charged object touches a metal knob?
Because when the charged object is say, negatively charged, the electrons in the electroscope want to get as far away as possible from the negative object because "like" charges REPEL. so when the electrons in the electroscope move to the leaves , they now are both negative and "like" charges so now the leaves want to get away from each other as well and that's why they separate.
Can the leaves of a metal leaf electroscope be attracted to each other?
No. There is only one connection for the leaves. They are either charged (spread apart) or not charged (not spread apart).
Why do the leaves of an electroscope repel each other when a charged object touches the knob?
Because when the charged object is say, negatively charged, the electrons in the electroscope want to get as far away as possible from the negative object because "like" charges REPEL. so when the electrons in the electroscope move to the leaves , they now are both negative and "like" charges so now the leaves want to get away from each other as well and that's why they separate.
How an electroscope works to detect static electricity?
When the probe of the electroscope is brought near a charge, free charges in the electroscope rod are either attracted to or repelled from the probe. This leaves a net charge at the other end of the rod (since the electroscope as a whole is electrically neutral). Since the other end of the rod is charged, its parts repel each other (since like charges repel). Thus, the gold-leaf indicators spread apart.
Why do leaves of gold leaf electroscope expand when a charged body touches it?
They both get charged with the same polarity, and therefore repel each other.
When does the leaves of gold leaf electroscope attracts?
When two unlike charges for example, a positive [protons] and a negative [electrons] attract each other.
Looking at the electroscope describe how you can cause the two leaves at the bottom to repel each other and stay that way?
Bring a positive object near the top
How come the leaves on a metal leaf electroscope repel?
An electroscope detects the static electrical charge on an object. If an object with a electrical charge is touched to the knob on top this charge is transferred to the rod and in turn to the metal leaves in the jar. Opposite charged objects attract and same charged objects repel. The charge on both leaves is the same polarity so they repel each other.
Why must a sphere rod and leaves of an electroscope be a conductor?
When a negatively charged rod touches the sphere of the electroscope, negative sharge spreads throughout the metal. Since the leaves are both negatively charged, the free ends repel and move away from each other. When a positvely rod touchs the sphere, negative charges move toward the sphere, causing the leaves to be positively charged. hope this helps :)
What balance the electric force of repulsion make the leaves don't separate further?
The simple metal foil electroscope has its leaves propelled apart by electrostatic forces repelling each other. Traditionally gold foil was used as the metal, (for it may be made very thin) but I imagine that today metallized plastic foils are lighter and will achieve greater separation. But you have to consider the net direction in which the charged foils will exert maximum force against each other.
How does an electroscope work to detect static electricity?
Electroscopes detect electric charge by the motion of a test object due to the Coulomb electrostatic force. The electric potential or voltage of an object equals its charge divided by its capacitance, so electroscopes can be regarded as crude voltmeters. The accumulation of enough charge to detect with an electroscope requires hundreds or thousands of volts, so electroscopes are only used with high voltage sources such as static electricity and electrostatic machines.
