Download App

Electrostatics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectrostatics1 Mark
MCQ
There is a solid sphere of radius ‘R’ having uniformly distributed charge. What is the relation between electric field ‘E’ (inside the sphere) and radius of sphere ‘R’ is
  • A
    $E \propto R^{-2}$
  • B
    $E \propto R^{-1}$
  • ✓
    $E \propto \frac{1}{R^s}$
  • D
    $E \propto R^{2}$
✓

Answer

Correct option: C.
$E \propto \frac{1}{R^s}$
(c) $E \propto \frac{1}{R^s}$

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

Explore more

More "M.C.Q (1 Marks)" from Electrostatics→Electrostatics — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Two conductors of same length are connected in parallel as shown in figure. Their cross-sectional areas $A_1$ and $A_2$ and their resistivities are ${\rho _1}$ and  ${\rho _2}$ respectively. The equivalent resistivity of this combination is
→
A modulating signal $2 \sin \left(6.28 \times 10^{6}\right) t$ is added to the carrier signal $4 \sin \left(12.56 \times 10^{9}\right)$ t for amplitude modulation. The combined signal is passed through a non-linear square law device. The output is then passed through a band pass filter. The bandwidth of the output signal of band pass filter will be $MHz$.
→
The effective resistance of two resistors in parallel is $\frac{12}{7} \Omega$. If one of the resistors is disconnected the resistance becomes 4 $\Omega$. The resistance of the other resistor is
→
Potential gradient is defined as
→
A proton is accelerated through $50,000\, V$. Its energy will increase by
→
Find the effective value of current  $i = 2\, sin\, 100\pi t + 2cos\,(100\pi t + 30^o)$
→
When objects at different distances are seen by the eye, which of the following remain constant?
→
Statement$-1: \text{NOT}$ gate is also called invertor circuit.Statement$-2: \text{NOT}$ gate inverts the input order.
→
The dominant mechamism for motion of charge carriers in forward and reverse biased  silicon $P-N$ junction are
→
A parallel plate capacitor carries a charge $q$. The distance between the plates is doubled by application of a force. The work done by the force is
→