Question
One brass plate is inserted between two charges. The force between two charges will:
✓
Answer
- Increase.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A freshly prepared radioactive source of half$-$life $2h$ emits radiation of intensity which is $64$ times the permissible safe level. The minimum time after which it would be possible to work safely with this source is:
→A circular metal plate of radius $R$ is rotating with a uniform angular velocity $ω$ with its plane perpendicular to a uniform magnetic field $B.$ Then the emf developed between the centre and the rim of the plate is
→A thin oil layer floats on water. A ray of light making an angle of incidence of $40^\circ$ shines on oil layer. The angle of refraction of light ray in water is $\left(\mu_{\text{oil}}=1.45, \mu_{\text{water}}=1.33\right)$
→The work done in placing a charge of $8 \times 10^{-18}$ coulomb on a condenser of capacity $100$ micro$-$farad is:
→Two spheres A and B of exactly same mass are given equal positive and negative charges respectively. Their masses after charging.
A convex mirror is used to form the image of an object. Then which of the following statements is wrong (a) The image lies between the pole and the focus(b) The image is diminished in size(c) The image is erect(d) The image is real
Assertion : A circular loop carrying current lies in XY plane with its center at origin having a magnetic flux in negative Z-axis.
Reason : Magnetic flux direction is independent of the direction of current in the conductor.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
Reason : Magnetic flux direction is independent of the direction of current in the conductor.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
In a coil of self inductance 0.5 henry, the current varies at a constant rate from zero to 10 amperes in 2 seconds. The e.m.f. generated in the coil is(a) 10 volts(b) 5 volts(c) 2.5 volts(d) 1.25 volts
A charged particle is moved along a magnetic field line. The magnetic force on the particle is:
A wire moves with a velocity v through a magnetic field and experiences an induced charge separation as shown in the figure. Then the direction of the magnetic field is
