Free Printable ES-2-1

Worksheets

ES-2-1

Total questions: 14

Worksheet time: 7mins

Name

Class

Date

ABC is an equilateral triangle. Charges +q are placed at each corner. The electric intensity at O will be

$\frac{1}{4\pi\in_0}\left(\frac{q}{r^2}\right)$

$\frac{1}{4\pi\in_0}\left(\frac{q}{r^{ }}\right)$

$\frac{1}{4\pi\in_0}\left(\frac{3q}{r^2}\right)$

zero

The distance between the two charges 25 $\mu$ C and 36 $\mu$ C is 11 cm At what point on the line joining the two, the intensity will be zero

At a distance of 5cm from 25 $\mu$ C

At a distance of 5cm from 36 $\mu$ C

At a distance of 10cm from 25 $\mu$ C

At a distance of 11 cm from 36 $\mu$ C

The unit of electric field is not equivalent to

N/C

J/C

V/m

J/Coulomb.meter

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

$E\propto R^{-2}$

$E\propto R^{-1}$

$E\propto R^2$

$E\propto\frac{1}{R^3}$

Conduction electrons are almost uniformly distributed within a conducting plate. When placed in an electrostatic field , the electric field 'E' within the plate

Is zero

Depends upon E

Depends upon the atomic number of the conducting element

Depends upon $\overrightarrow{E}$

A charge particle is free to move in an electric field. It will travel

Always along a line of force

Along a line of force, if its initial velocity is zero

Along a line of force, if it has some initial velocity in the direction of an acute angle with the line of force

None of the above

Figure shows the electric lines of force emerging from a charged body. If the electric field at A and B are E_A and E_B respectively and if the displacement between A and B is r then

E_A> E_B

E_{A <} E_B

E_{A =} E_{B / r}

E_{A =} E_{B / r}²

The electric field inside a spherical shell of uniform surface charge density is

Constant, less than zero

Directly proportional to the distance from the centre

zero

None of the above

At which point is the electric field the weakest?

A because it is the furthest away

A because the field lines are further apart

C because the field lines are further apart

C because it is the furthest away

10.

At which point is the electric field the strongest

11.

Which graph best represents the relationship between the strength of an electric field and distance from a point charge?

12.

The electric field lines for a positive charge is always directed away from the charge. True or False?

True

False

13.

What does the Law of Conservation of Charge state?

like charges repel and opposites attract

positive charge fields point away from a charge; negative points toward

charges cannot be created nor destroyed, only transferred

14.

When a balloon is rubbed on clothes it acquires a charge by ___________

Induction

reduction

friction

concuction

100 %

ES-2-1

Total questions: 14

Worksheet time: 7mins

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