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IMPORTANT
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Consider the charge configuration and a spherical Gaussian surface as shown in the figure. When calculating the flux of the electric field over the spherical surface, the electric field will be due to

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Important Questions on Electric Charges and Fields

EASY
CUET (UG)
IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 76

According to Gauss's theorem, the total outward normal flux over a closed surface is equal to

EASY
CUET (UG)
IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 77
The SI unit of surface integral of electric field is
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CUET (UG)
IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 78
A charge q is placed at the centre of the open end of a cylindrical vessel. The flux of the electric field through the surface of the vessel is -
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EASY
CUET (UG)
IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 79

The electric flux through a closed surface area S enclosing charge q is ϕ. If the surface area is doubled, then the flux is

EASY
CUET (UG)
IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 80
The dimensional formula of electric flux is
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CUET (UG)
IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 81
A cylinder of radius R and length L is placed in a uniform electric field E parallel to the cylinder axis. The total flux for the surface of the cylinder is given by
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CUET (UG)
IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 82
An electric dipole consists of two opposite charges of magnitude q=1×10-6 C separated by 2 cm. The dipole is placed in an external field of 1×105 N C-1. What maximum torque does the field exert on the dipole? How much work must an external agent do to turn the dipole end for end, starting from position of alignment (θ=00)
EASY
CUET (UG)
IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 1 - Electric Charges and Fields>Exercise>Q 83
The relation between the intensity of the electric field of an electric dipole at a distance 'r' from its centre on its axis and the distance 'r' is ................