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Dimensional Analysis

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Consider the region of electric field, as shown in the figure. Work done by the electric field, in carrying a protonfrom point B to point A, will be4.VA 10 VVB 20 V(1) 1.610-18J(3) 1.6 x 10-19 J(2)(4)-1.610-18J-1.6 x 10-19 Jsh Educational Saricoo Lt

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Q. There exists a region of electric field with potential difference of 25 V as shown in figure. An electron enters this region at speed of v = 3

\times 10^{6}

m/s at angle of

α

and emerges out of region at angle

β

\frac{s i n α}{s i n β}

is [Electric field exist in given region only]

e = 1.6 \times 10^{-} 19, m = 9.1 \times 10^{-} 31

(2 decimal places)

Q. There exists a region of electric field with potential difference of 25 V as shown in figure. An electron enters this region at speed of v = 3

\times 10^{6}

m/s at angle of

α

and emerges out of region at angle

β

\frac{s i n α}{s i n β}

is [Electric field exist in given region only]

e = 1.6 \times 10^{-} 19, m = 9.1 \times 10^{-} 31

(2 decimal places)

Q. In moving from

A

B

along an electric field line, the work done by the electric field on an electron is

6.4 \times 10^{- 19} J

ϕ_{1}

ϕ_{2}

are equipotential surfaces, then the potential difference

V_{C}

V_{A}

Q. The work done by electric field in carrying a point charge of 5

μ

C from a point A to point B is 10 mJ. The potential difference

V_{A} - V_{B}

Q. A water drop of mass

3.2 \times 10^{- 18}

kg and carrying a charge of

1.6 \times 10^{- 19}

C is suspended stationary between two plates of an electric field. Given

g = 10

m / s^{2}

, the intensity of the electric field required is

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