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	A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?	A. 3 x 10²⁰ B. 3 x 10¹⁰ C. 6 x 10²⁰ D. 6 x 10¹⁰
2	Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends	A. 120 C B. 240 C C. 20 C D. 4 C
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	In a voltmeter the conduction takes place due to	A. Electrons only B. Holes only C. Electrons and holes D. Electrons and ions
5	A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is	A. Zero B. 0.5Ω C. 1.1Ω D. 5.0Ω
6	One coulomb per second is equal to	A. One volt B. One ampere C. One hom D. One henry
7	A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then	A. The charge in the plates reduces and potential difference increase B. Potential difference between the plates increase, stored energy decreases and charge remains the same C. Potential difference between the plates decreases and charge remains unchanged D. None of the above
8	The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to	A. Coulomb's law B. Gauss's law C. Biot-Sarwat law D. Ampere's law
9	Ohm's law states that	A. The current through a resistor is directly proportional to the applied voltage B. The voltage across a resistor is directly proportional to the current passing through it C. Resistance is the constant of proportionality between the voltage and current D. all of these
10	The SI unit of permitivity is	A. Nm²C² B. N^-1m^-2C² C. NmC² D. Nm²C^-1

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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

Which one of the following has larger value of relative permitivity Erat room temperature?

At any point on the right bisector of the line joining two equal and opposite charges

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

Free electrons are

Resistance of a conductor is increased, the currant will

The SI unit of current is

The unit of conductance is

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

Electric potential of earth is taken to be zero because the earth is good

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

If electric and gravitational force on an electron in a uniform electric field will be

The charge carriers in electrolyte are positive and negative

Which of the following does not obey ohm's law?

Cause of heat production in a current carrying conductor is

The SI unit of electric field intensity is

Ohm established a relation between

The resistance of the given conductor can be increased by

Surface density of charge is defined as

Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if

The ohm's is defined as

In a voltmeter the conduction takes place due to

The liquid which conduct current is known as

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

Thermocouple is an arrangement of two different metals

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

The electric lines of force are

The unit of resistivity is

If we increase the distance between two plates of the capacitor, the capacitance will

The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately

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ECAT Physics Chapter 12 Important MCQ's

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Which one of the following has larger value of relative permitivity E_rat room temperature?

The ratio of the gravitational force F_gto the electrostatic force F_ebetween two electrons at the same distance apart is approximately