ECAT Pre General Science Chapter 12 online mcq test with answers for Physics chapter 12 (Electrostatics)

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	The electric intensity outside the two oppositely charged parallel metal plates is	A. Maximum B. Minimum C. Zero D. Infinite
2	A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?	A. Electric potential at the surface of the cube is zero B. Electric potential within the cube is zero C. Electric filed is normal to the surface of the cube D. Electric filed varies within the cube
3	The charge per unit time through any cross-section of a conductor is called	A. capacitance B. electric power C. current D. potential difference
4	A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be	A. 1840 KeV B. 1/1840 KeV C. 1 KeV D. 920 KeV
5	An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be	A. V/e B. eV C. e/V D. V
6	If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be	A. 5μF B. 20μF C. 10μF D. 15μF
7	A point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to	A. -q B. +q C. -2q D. +4q
8	The value of electrical constant of proportionality k is	A. 9 x 10⁹Nm²C^-2 B. 9 x 10^-9Nm²C^-2 C. 9 x 10¹⁰Nm²C² D. 9.85 x 10^-12N^-1C^-2
9	A closed surface contains two equal and opposite charges. The net electric flux from the surface will be	A. Negative B. Positive C. Infinite D. Zero
10	The electrode connected with the positive terminal of the current source is called	A. cathode B. anode C. electrolyte D. position

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ECAT Pre General Science Physics Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics

ECAT Pre General Science Physics Chapter 12 Electrostatics

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be

Which one of the following is the unit of electric field intensity

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

A point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to

Solar cell converts sunlight directly into

A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be

The unit of intensity of electric field is

The relation V = IR represents

The relation between charge 'Q' and current 'I' is given by

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

A conducting wire is drawn to double its length. Final resistivity of the material will be

If the two charges in Coulomb's law have double distance between them, then electric force

The concept of field theory was put forward by

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

The electric field intensity at a point due to a point charge

For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

The energy stored in a charge capacitor

The unit of conductance is

Electric generators which convert mechanical energy into

Resistance of a conductor depends upon

An electric charge at rest is

The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be

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ECAT Physics Chapter 12 Important MCQ's

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