Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 129

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For two infinitely charged parallel sheets, the electric field at $P$ will be

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Important Questions on Electric Charges and Fields

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Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 130

Charge

+ q

on a small conducting sphere

S_{1}

is placed inside a large hollow metallic sphere

S_{2}

having a charge

+ Q

as shown in the figure. The sphere

S_{1}

is then connected to

S_{2}

by a conducting wire. The charge on

S_{1}

will be

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Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 131

An infinite line charge produces a field of

9 \times 10^{4} N C^{- 1}

at a distance of 2 cm. the linear density is

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Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 132

Three infinitely long charge sheets are placed as shown in figure. The electric field at point

P

is

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Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 133

An infinite line charge produces a field of

7.182 \times 10^{8} N C^{- 1}

at a distance of

2 cm

. The linear charge density is

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Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 134

In infinite parallel plane sheet of a metal is charged to charge density σ coulomb per square metre in a medium of dielectric constant

K

. Intensity of electric field near the metallic surface will be

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Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 135

A parallel plate capacitor has two square plates with equal and opposite charges. The surface charge densities on the plates are

+ σ

and

- σ

respectively. In the region between the plates the magnitude of the electric field is

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Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 136

Two large thin metal plates are parallel and close to each other. On their inner faces, the plates have surface charge densities of opposite signs and of magnitude

16 \times 10^{- 22} C m^{- 2}

. The electric field between the plates is