Quiz # 13



#1 The pressure exerted on the ground by a man is greatest

Pressure is normal force per unit area, therefore, for lesser value of area pressure is greatest.

#2 Of the two bulbs in a house, one glows brighter than the other. Which of the following statements is correct?

The dimmer bulb has larger resistance than the brighter one. We know that P=v^2/R
i.e. Power of the bulb ∝1/Resistance
Resistance is the obstruction offer to the flow of current.

#3 A dipole, placed in a uniform electric field experience-

Since dipole is placed in uniform electric field the net force will be zero but the torque will produce since the dipole axis will form an angle with the electric field and will be given by product of force and distance between forces.

#4 A closed surface has ‘n’ electric dipole located inside it. The net electric flux emerging out of the surface-

The net flux will be zero as the electric field lines entering the negative end of the dipole will be exactly cancelled by the electric field lines leaving the positive end of the dipole.

#5 In electromagnetic induction, the induced charge does not depend on –

Induced charge does not depend upon time of change of magnetic flux, as Induced charge Q = n∆T∅R 
August 7, 2019

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