MCQ
If one penetrates a uniformly charged spherical cloud, electric field strength:
  • Decreases directly as the distance from the centre.
  • B
    Increases directly as the distance from the centre.
  • C
    Remains constant.
  • D
    None of these.

Answer

Correct option: A.
Decreases directly as the distance from the centre.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The electron emitted in beta radiation originates from:
A photon is emitted in transition from $n =4$ to $n =1$ level in hydrogen atom. The corresponding wavelength for this transition is $.........\,nm$ $\text { (given, } h =4 \times 10^{-15} eVs \text { ) : }$
Half-life of a substance is 10 years. In what time, it becomes $\frac{1}{4}$ th part of the initial amount
If the distance between a point source and screen is doubled, then intensity of light on the screen will become
Assertion : The true geographic north direction is found by using a compass needle.

Reason : The magnetic meridian of the earth is along the axis of rotation of the earth.

A resistance of $400\,\Omega$ is connected in series with an inductor of $(3 / \pi)$ $H$ and this combination is connected across an $A.C.$ source as shown in figure.
A $110 \,V$ $d.c$. heater is used on an $a.c.$ source, such that the heat produced is same as it produces when connected to $110 \,V$ $dc$ in same time-intervals. What would be the $r.m.s.$ value of the alternating voltage is .......... $V$
Assertion : Faraday’s laws are consequences of conservation of energy.

Reason : In a purely resistive $A.C.$ circuit, the current lags behind the $e.m.f.$ in phase.

The variation of applied potential and current flowing through a given wire is shown in figure. The length of wire is $31.4 \,cm$. The diameter of wire is measured as $2.4 \,cm$. The resistivity of the given wire is measured as $x \times 10^{-3} \,\Omega cm$. The value of $x$ is_______ [Take $\pi=3.14]$
Five resistors of given values are connected together as shown in the figure. The current in the arm BD will be