Electrostatic Shielding
Physics ⇒ Electricity and Magnetism
Electrostatic Shielding starts at 10 and continues till grade 12.
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A conducting shell is grounded and placed in an external electric field. What is the potential inside the shell?
A hollow metallic sphere is given a charge and then placed in an external electric field. What happens to the field inside the sphere?
A metal box is placed in a region with a strong static electric field. What will be the electric field inside the box?
A metal box is used to store sensitive electronic equipment. What property of the box ensures electrostatic shielding?
A conducting shell is grounded and placed in an external electric field. What is the potential inside the shell?
A hollow metallic sphere is given a charge and then placed in an external electric field. What happens to the field inside the sphere?
A metal box is placed in a region with a strong static electric field. What will be the electric field inside the box?
A metal box is used to store sensitive electronic equipment. What property of the box ensures electrostatic shielding?
Which of the following devices uses electrostatic shielding? (1) Faraday cage (2) Transformer (3) Ammeter (4) Resistor
Which of the following is NOT a limitation of electrostatic shielding? (1) It does not block static electric fields (2) It does not block magnetic fields (3) It requires a conducting material (4) It is ineffective for rapidly changing fields
Which of the following is NOT a property of a conductor in electrostatic equilibrium? (1) Electric field inside is zero (2) Surface is an equipotential (3) Charges reside only on the surface (4) Electric field outside is always zero
Which of the following is NOT a use of electrostatic shielding? (1) Protecting cables (2) Shielding sensitive instruments (3) Enhancing magnetic fields (4) Preventing electric shocks
Fill in the blank: The effectiveness of electrostatic shielding depends on the __________ of the material used.
Fill in the blank: The electric field inside a conductor in electrostatic equilibrium is __________.
Fill in the blank: The electric field inside a hollow conductor is __________ when it is in electrostatic equilibrium.
Fill in the blank: The phenomenon of electrostatic shielding is not effective against __________ fields.
A metal shell has a cavity inside it. If a charge is placed inside the cavity, will it affect the electric field outside the shell?
If a charged object is placed inside a hollow conductor, will the charge on the object affect the outside of the conductor?
True or False: A hollow conductor can shield its interior from external static electric fields.
True or False: A plastic enclosure can provide effective electrostatic shielding.
