Electric potential Quiz 1

Question 1

A charged particle which was travelling in an orbit having radius $$4	imes {{10}^{-10}}	ext{ }m$$. The electric potential experienced during this case was found to be $$3.6	ext{ }V$$. Then identify this charged particle?

Accepted Answer

Proton

Answer

Electron

Answer

Neutron

Answer

Alpha- particle

Question 2

There are five charged particles in a room which are having charges$$1.6	imes {{10}^{-19}},3.2	imes {{10}^{-19}},4.8	imes {{10}^{-19}},6.4	imes {{10}^{-19}}	ext{ and 8}	imes {{10}^{-19}}$$. They are separated by a distance mentioned as $$2	ext{ }m,3	ext{ }m,4	ext{ }m,5	ext{ }m	ext{ and }6	ext{ }m$$. Calculate the total electric potential at the middle of the room.

Accepted Answer

$$5.1	imes {{10}^{-11}}	ext{ }V$$

Answer

$$3.3	imes {{10}^{-11}}	ext{ }V$$

Answer

$$6.7	imes {{10}^{-11}}	ext{ }V$$

Answer

$$1.2	imes {{10}^{-11}}	ext{ }V$$

Question 3

Mehul was observing an electron which was moving in an electric field mentioned as $$4	imes {{10}^{4}}	ext{ }V{{m}^{-1}}$$.  The length of the electric field is  $$5	ext{ }m$$. The change in electric potential calculated by Mehul was $$-5	imes {{10}^{3}}	ext{ }V$$.Calculate the percentage error in change in electric potential.

Accepted Answer

$$150\%$$

Answer

$$20\%$$

Answer

$$400\%$$

Answer

$$100\%$$

Question 4

Suppose that Ramsan was travelling in a different medium where there are charged particles in it. The energy associated with a charged particle was given as $$9	ext{ }J$$.  The charge of the particle was mentioned as $$4	imes {{10}^{-19}}	ext{ C}$$. Calculate the distance of separation between the charged particle and Ramsan.

Accepted Answer

$$1.6	imes {{10}^{-28}}	ext{ }m$$

Answer

$$4.3	imes {{10}^{-28}}	ext{ }m$$

Answer

$$1.13	imes {{10}^{-28}}	ext{ }m$$

Answer

$$9.8	imes {{10}^{-28}}	ext{ }m$$

Question 5

Hima was observing a charged particle which is experiencing a force of $$20	ext{ }N$$ when it is travelling from $$r=4	ext{ }m$$ to $$r=7	ext{ }m$$. Calculate the change in electric potential if the charge of the particle is $$2.2	imes {{10}^{-19}}	ext{ }C$$.

Accepted Answer

$$-27.27	imes {{10}^{19}}	ext{ }V$$

Answer

$$27.27	imes {{10}^{19}}	ext{ }V$$

Answer

$$-53.53	imes {{10}^{19}}	ext{ }V$$

Answer

$$53.53	imes {{10}^{19}}	ext{ }V$$