Subject: Physics, asked on 7/5/18

## Q.37. The value of m so that elongation in both the identical massless rods are same is (1) $m=\frac{M}{2}$ (2) $m=\frac{M}{3}$ (3) m = 0 (4) m = M

Subject: Physics, asked on 10/7/19

## help me for solving

Subject: Physics, asked on 8/4/15

## There are n infinite metal plates arranged parallel to each other as shown. q1, q2 , ...., qn are respective charges on these plates. Chargeq on the left surface of left most plate is ?1) (q1 + q2 +...+qn)/22) (q1 + q2 +---+qn)/n3) 04) none

Subject: Physics, asked on 13/7/12

## thet 3 identical resistors R1,R2 and R3 are connected to a battery as shown in the fig. what wil b d ratio of voltages across R1 andR2?

Subject: Physics, asked on 9/9/17

## Solve this: Q.88. The heat generated in the circuit after closing the switch is (1) $\frac{C{V}^{2}}{2}$ (2) $C{V}^{2}$ (3) 2$C{V}^{2}$ (4) Zero

Subject: Physics, asked on 4/7/17

## An Oil Drop of mass 0.03 gram carrying a negative charge of 3e is held in equilibrium between two metal plates 1.5 CM apart and across which PD is maintained what is the intensity of electric field and PD between the plate . Given : e=1.6x10^-19, g= 9.8m/s

Subject: Physics, asked on 7/4/16

## Name the charge configuration for which electric field at distances 1 cm, 2 cm, 3 cm are in the ratio% 1: 1/8 : 1/27 1: 1/4 : 1/9

Subject: Physics, asked on 29/4/19

## Kindly answer this

Subject: Physics, asked on 14/5/18

## 13 13. The figure shown below shows a uniform spherical shell containing a short dipole placed at its centre. Read the following statements. a. The flux of the electric field through the sphere b. The electric field is zero at every point of the sphere c. The electric field is not zero anywhere on the sphere Choose the correct statement(s). (1) Only b                                                     (2) only a (3) Both a & c                                              (4) Both a & b

Subject: Physics, asked on 19/1/12

## Which of the following statements about electric field lines is incorrect? A : They never cross each other B : They always form closed loops C : They point from positive toward negative charges D : They point away from positive as well as negative charges Solution Electric field lines represent the electric field present in a region. The electrostatic field between a test charge and a charged body is represented by the electric field lines that exist between them. Electric field lines never cross each other and point from positive toward negative charge. They do not form closed loops and always start from a positive charge and end on a negative charge. The correct answer is C.Please explain how option C is incorrect ! Because I think it would be D....

Subject: Physics, asked on 31/5/14

## what is N=nNa

Subject: Physics, asked on 29/7/14

## Name the physical quantity whose SI unit is Newton Coulomb-1.

Subject: Physics, asked on 4/7/16

## The following table shows the dimensions and medium between the plates of three capacitors P, Q and R. Rank them in increasing order of their capacitances.   Sr.No Capacitor Area of plates Separation between the plates Medium between the plates 1 P A D Medium of Er ---4 2 Q 2A D/2 air 3 R 2A D Medium of Ex =2

Subject: Physics, asked on 4/7/16

## If a dielectric slab between the parallel plates of a capacitor is replaced by a metal plate of same thickness t < d where d is the separation between the plates of the capacitor, how does its capacitance change?

Subject: Physics, asked on 30/4/16

## Sketch a graph to show the dependence of a charge Q stored in a capacitor on the potential difference V applied. From the graph drawn how will you calculate the capacitance C of the capacitor and the energy U stored in the capacitor

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