BITSAT 2021 | Electrostatics Question 2 | Physics

Four charges equal to + Q are placed at the four corners of a square and a charge ($$-$$q) is at its centre. If the system is in equilibrium, then the value of $$-$$q is

$$ - {Q \over 4}(1 + 2\sqrt 2 )$$

$${Q \over 2}(2\sqrt 2 + 1)$$

$${Q \over 4}(1 + 2\sqrt 2 )$$

$${Q \over 4}(1 + \sqrt 2 )$$

BITSAT 2021

MCQ (Single Correct Answer)

-1

An electric dipole is placed at an angle of 30$$^\circ$$ in a non-uniform electric field. The dipole will experience

torque only

translational force only in the direction of the field

translational force only in a direction normal to the direction of the field

torque as well as a translational force

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