Electric charge Quiz 1

Question 1

Nivin was doing an experiment in his lab where he collided an electron with a neutral particle.The number of particles produced by this collision is $$113$$. What will be the total charge of the system?

Accepted Answer

$$1.8	imes {{10}^{-21}}\,C$$

Answer

$$1.8	imes {{10}^{-19}}\,C$$

Answer

$$6.3	imes {{10}^{-21}}\,C$$

Answer

$$4.8	imes {{10}^{-19}}\,C$$

Question 2

Nimmy is a very curious girl who thinks a lot. She is having a doubt regarding the count of electrons present in a $$-7\,\mu C$$ charge after hearing a class about electric charges. Can you help her?

Accepted Answer

$$4.4	imes {{10}^{13}}$$

Answer

$$9	imes {{10}^{13}}$$

Answer

$$7	imes {{10}^{-6}}$$

Answer

None of these

Question 3

Lilly once rubbed her balloon with the woollen dress she wore and her brother was rubbing the refill with a polythene sheet. Coincidentally, when they were placed together, the balloon seemed to attract the refill. What will be the reason for this ?

Accepted Answer

Due to static electricity formed there

Answer

Due to inertia

Answer

Due to force of rubbing

Answer

Can’t say

Question 4

Assertion: The unit of electric charge is Ampere hour. $$\$$ Reason: The current flowing will be charged in motion per unit time.

Accepted Answer

Assertion and reason are correct and the reason is the perfect explanation of assertion.

Answer

Assertion is incorrect and Reason is correct.

Answer

Assertion is correct and Reason is incorrect.

Answer

Assertion and reason are correct but the reason is not the perfect explanation of assertion.

Question 5

The energy of an ion has been mentioned as $$7	imes {{10}^{-6}}\,J$$. Calculate the value of electric charge if the electrostatic potential is $$4\,V$$.

Accepted Answer

$$1.75\,\mu C$$

Answer

$$28\,\mu C$$

Answer

$$0.57\,\mu C$$

Answer

$$3.8\,\mu C$$