NEET Exam > NEET Videos > Physics Class 12 > Charging by Induction
Charging by Induction Video Lecture | Physics Class 12 - NEET
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97 videos|336 docs|104 tests
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FAQs on Charging by Induction Video Lecture - Physics Class 12 - NEET
| 1. What is charging by induction? |  |
Ans. Charging by induction is a process where an object is charged without direct contact with a charging source. It involves the transfer of electric charge from one object to another through the electric field.
| 2. How does charging by induction work? | |
Ans. Charging by induction works by bringing a charged object close to a neutral object. The charged object induces a separation of charges in the neutral object, with one side becoming positively charged and the other side becoming negatively charged. This results in the neutral object being charged by the induction process.
| 3. Can any object be charged by induction? | |
Ans. Yes, any object that can conduct electricity can be charged by induction. The process relies on the transfer of electric charge through the object's electric field, so it is necessary for the object to have the ability to conduct electricity.
| 4. What are some practical applications of charging by induction? | |
Ans. Charging by induction has various practical applications. Some examples include wireless charging of electronic devices, electrostatic precipitators used in air pollution control, and Van de Graaff generators used in scientific experiments and demonstrations.
| 5. Is charging by induction a safe method? | |
Ans. Yes, charging by induction is generally considered a safe method as it does not involve direct contact with a charging source. However, it is important to follow proper safety precautions and guidelines when dealing with high-voltage charges or sensitive electronic devices to avoid any potential risks or damage.
Text Transcript from Video
charging by induction induction is the
process by which a body acquires a
charge of opposite sign without losing
any of its own charges when another
charged body is brought very close to it
let us try to make a metal sphere
positively charged by bringing a
negatively charged glass rod near it the
metal sphere which is supported on an
insulating stand is initially neutral
bring a negatively charged rod near it
without touching the sphere the free
electrons in the metal sphere are
repelled by the excess of electrons on
the rod and they shift away from the rod
the charges cannot escape from the
sphere because the supporting stand and
the surrounding air are insulators thus
we see that there is excess of negative
charge on the side away from the rod and
deficit of electrons on the side nearer
to the rod these charges are called
induced charges let us see what happens
to the charge if the metal sphere is
connected to the ground by a conducting
wire the negative charges that is the
electrons flow to the ground whereas the
positive charges at the near-end remain
due to the influence of the charged rod
now disconnect the sphere from the
ground the positive charge continues to
remain on the sphere let us see what
happens when the rod is removed the
charge is spread uniformly over the
sphere thus we get a positively charged
metal sphere
let us try to make the metal sphere
negative by bringing a positively
charged rod near it
identify the charges on the sides AMV
the free electrons in the metal sphere
move towards the side which is closer to
the charged rod and farther side becomes
positively charged
what happens when the sphere is ground
if we ground the metal sphere electrons
flow from the earth into the metal
sphere and neutralize the positive
charges
what happens when the earthing is
removed on disconnecting the conductor
from the sphere only the negative
charges remain on the sphere what
happens when the glass rod is removed on
the removal of the glass rod negative
charges spread uniformly on the metal
sphere
you
process by which a body acquires a
charge of opposite sign without losing
any of its own charges when another
charged body is brought very close to it
let us try to make a metal sphere
positively charged by bringing a
negatively charged glass rod near it the
metal sphere which is supported on an
insulating stand is initially neutral
bring a negatively charged rod near it
without touching the sphere the free
electrons in the metal sphere are
repelled by the excess of electrons on
the rod and they shift away from the rod
the charges cannot escape from the
sphere because the supporting stand and
the surrounding air are insulators thus
we see that there is excess of negative
charge on the side away from the rod and
deficit of electrons on the side nearer
to the rod these charges are called
induced charges let us see what happens
to the charge if the metal sphere is
connected to the ground by a conducting
wire the negative charges that is the
electrons flow to the ground whereas the
positive charges at the near-end remain
due to the influence of the charged rod
now disconnect the sphere from the
ground the positive charge continues to
remain on the sphere let us see what
happens when the rod is removed the
charge is spread uniformly over the
sphere thus we get a positively charged
metal sphere
let us try to make the metal sphere
negative by bringing a positively
charged rod near it
identify the charges on the sides AMV
the free electrons in the metal sphere
move towards the side which is closer to
the charged rod and farther side becomes
positively charged
what happens when the sphere is ground
if we ground the metal sphere electrons
flow from the earth into the metal
sphere and neutralize the positive
charges
what happens when the earthing is
removed on disconnecting the conductor
from the sphere only the negative
charges remain on the sphere what
happens when the glass rod is removed on
the removal of the glass rod negative
charges spread uniformly on the metal
sphere
you
About this Video
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Dec 21, 2024 Last updated |
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