Electric Charge And Fields Quiz 1

Question 1

Which of the following is correct for permittivity of free space?

Accepted Answer

$8.854\times10^{-12}\,C^2N^{-1}m^{-2}$

Answer

$8.854\times10^{-12}\,C^2N^{-1}m^{-1}$

Answer

$8.854\times10^{-11}\,C^2N^{-2}m^{-2}$

Answer

None of these

Question 2

Which of the following is correct for quantisation of charge?

Accepted Answer

q = ne

Answer

q = it

Answer

q = $\frac it$

Answer

q = $\frac ne$

Question 3

The value of $\frac1{4\pi\varepsilon_0}$ is equal:

Accepted Answer

$9\times10^{9}N\,m^2/C^2$

Answer

$9\times10^{-9}N\,m^2/C^2$

Answer

$9\times10^{9}N\,m/C^2$

Answer

None of these

Question 4

As shown in figure, the electric field lines represent due to charge:

Accepted Answer

0 < q

Answer

0 > q

Answer

$\mp q$

Answer

Can&prime;t say

Question 5

Which of the following is not properties of filed lines?

Accepted Answer

Two field lines can cross each other.

Answer

Field lines start from positive charges and end at negative charges.

Answer

Electric field lines do not form any closed loops.

Answer

In a charge-free region, electric filed lines can be taken to be continuous curve without any breaks.

Game Settings