Electric fields and charges practice · Medium

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Analyzing +4 | -1

Point charges

+ 4q, - q

and

+ 4q

are kept on the

x

-axis at points

x = 0,x = a

and

x = 2a

respectively, then

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Correct option: C

All the charges are in unstable equilibrium

Option C is correct because the charge -q is in stable equilibrium, while the charges +4q are in unstable equilibrium.

92 Medium

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Analyzing +4 | -1

Given below are two statements
Statement-I: A point charge is brought in an electric field. The value of electric field at a point near to the charge may increase if the charge is positive.
Statement-II: An electric dipole is placed in a non-uniform electric field. The net electric force on the dipole will not be zero.
Choose the correct answer from the options given below

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Correct option: A

Both statement-I and statement-II are true

Option A (Both statement-I and statement-II are true) is correct because a positive charge increases the electric field and a dipole experiences a net force in a non-uniform field.

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Review ELECTRIC FIELDS AND CHARGES in your textbook or class notes, then use this set to check your understanding.

Showing 91-92 of 92 questions

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