Electric Charge

Q.

Any circuit can have a charge of 8.4 x 10^-18 C.

1. True
2. False

Q. The north end of the freely suspended bar magnet points towards the.

1. geographical North
2. geographical South
3. geographical East
4. geographical West

Q.

Higher the latitude, lower the temperature give reason.

Q. Charge of number of electrons together make up 1 coulomb of charge.

1. $6.25\times {10}^{18}$
2. $1.674\times {10}^{18}$
3. $1.672\times {10}^{18}$
4. $9.1\times {10}^{18}$

Q.

Two charged objects are brought close to each other. Choose the most appropriate statement from the following options:

1. They may attract

2. They may repel

3. They may attract or repel depending on the type of charges they carry

4. There will be no effect

Q.

State whether the following statement is true or false:

In a neutral body, the amount of positive charge is equal to the amount of negative charge.

1. True
2. False

Q.

When high voltage potential difference is applied across the two electrodes in a discharge tube maintained at low-pressure $({10}^{-6}\mathrm{atm})$ certain rays were produced from the surface of the cathode. They were called cathode rays. These gases ionize the gas through which they pass. The positive ions so produced move in the opposite direction and are called anode rays. The study of the properties of these rays led to the discovery of two important sub-atomic particles. Read the passage and answer the following questions.

1. Which sub-atomic particles was discovered by the study of cathode rays. (a) Protons (b) positrons (c) electrons (d) neutrons
2. What is the value of the elm (charge/mass) ratio of cathode rays?
3. Which fundamental sub-atomic particle was discovered by the detailed study of positive rays?
4. What is the mass of electrons on the atomic mass scale?

Q.

Magnetic Declination is the angle between ______.

Q. A charged body having 11 electrons and 15 protons can be made neutral by adding _____.

1. 4 electrons
2. 4 protons
3. 3 electrons
4. 3 protons

Q.

Assertion: The true Geographic North direction is found by using a compass needle.

a) Both Assertion and Reason are incorrect. b) Assertion is correct but Reason is incorrect. c) Assertion is incorrect but Reason is correct d) Both Assertion and Reason are incorrect.

Q. The minimum coulombian force between two charges separated by 1ANGSTROM is ?

Q. ntA ball with charge -50e is placed at the centre of a hollow spherical shell has a net charge of -50e.What is the charge on the shells outer surface?n nta)-50en ntb)ZEROn ntc)-100en ntd)+100en ntn

Q. is used inside an electromagnet to make it stronger.

1. An alumium core
2. A soft steel core
3. A soft iron core
4. A hard iron core

Q. Define - 1.Polarization 2.Ground State 3.Excited State 4.Gaseous Isolated Atom

Q. Which of the following is not a consequence of an earthquake?

1. Property damage
2. Landslide
3. Land cracks
4. Drought

Q. ntA stationary hydrogen atom of mass M emits a photon corresponding to the second line of Lyman series. If R is Rydberg constant, what is the velocity acquired by the atom?n

Q.

There are two types of charges - positive charge and negative charge.

1. True

2. False

Q. Why is the Earth called as "the ocean of charges"?

1. It can absorb a stream of both positive as well as negative charges.
2. It can absorb a stream of positive charges only.
3. It can absorb a stream of negative charges only.
4. It cannot absorb a stream of either positive or negative charges.

Q. Define the term charge. A short definition would be helpful. Thank you.

Q. What is electron cloud ?

Q. Electrons in the have the highest tendency to jump out, into any other neighbouring atom.

1. innermost orbit
2. nucleus
3. outermost orbit