A potential difference of 5000 volt is applied between two parall… - Vidyadip

Question

A potential difference of $5000$ volt is applied between two parallel plates $5\ cm$ apart. A small oil drop having a charge of $9.6 \time 10-19 C$ falls between the plates. Find (i) electric field intensity between the plates and (ii) the force on the oil drop.

✓

Answer

Given: $V = 5000 volt, d = 5 cm = 5 \times 10^{-2} m$
$q = 9.6 \times 10^{-19} C$
To find:
i. Electric field intensity (E)
ii. Force (F)
Formula:
i. $E =\frac{V}{d} \frac{q}{r}$
ii. $E =\frac{F}{q}$
Calculation: From formula (i),
$E =\frac{F}{q}=10^5 N / C$
From formula (ii)
$ F=E \times q$
$=10^5 \times 9.6 \times 10^{-19}$
$=9.6 \times 10^{-14} N $

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 "Answer the following in Detail" from Electrostatics→Electrostatics — all question types→Physics STD 11 Science question papers→Maharashtra Board STD 11 Science question papers→Maharashtra Board question paper generator→

Similar questions

A hole of radius $r$ is cut from a uniform disc of radius $2r.$ Centre of the hole is at a distance $r$ from centre of the disc. Locate centre of mass of the remaining part of the disc.

What is super conductivity?

Explain the concept of electrical conduction in a conductor.

The acceleration due to gravity is determined by using a simple pendulum of length $l = (100 ± 0.1) \ cm$. If its time period is $T = (2 ± 0.01) s$, find the maximum percentage error in the measurement of g.

Derive expression for electric field when an electron of mass $m$ is subjected to an electric field $(E).$

Define the binding energy of a satellite. Obtain an expression for binding energy of a satellite revolving around the Earth at certain attitude.

A child walking on a footpath notices that the width of the footpath is uneven. He reported this to his school principal and the complaint was forwarded to the municipal officer.
i. What is the possible error encountered?
ii. What is the relative error in width of footpath if width of footpath in $10 m$ length are noted as $5 m, 5.5 m, 5 m, 6 m$ and $4.5 m?$

A car uses a convex mirror of curvature 1.2 m as its rear-view mirror. A minibus of cross section 2.2 m × 2.2 m is 6.6 m away from the mirror. Estimate the image size.

If the measured values of two quantities are $A \pm \Delta A$ and $B \pm \Delta B, \triangle A$ and $\Delta B$ being the mean absolute errors. What is the maximum possible error in $A \pm B$ ? Show that if $Z=\frac{A}{B}$ $\frac{\Delta Z}{Z}=\frac{\Delta A}{A}+\frac{\Delta B}{B}$

The radius of a sphere measured repeatedly yields values $5.63 m, 5.54 m, 5.44 m, 5.40 m$ and $5.35 m.$ Determine the most probable value of radius and the mean absolute, relative and percentage errors.