ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	Electron volt is the unit of	A. Potential difference B. Energy C. Resistance D. Capacitance
2	An electric charge at rest is	A. Only an electric field B. Only a magnetic field C. Both electric and magnetic fields D. None of the above
3	If electric and gravitational force on an electron in a uniform electric field will be	A. E=mg/q B. E=q/mg C. E=,g/q D. E=qg/m
4	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
5	Ohm established a relation between	A. voltage and resistance B. voltage and charge C. voltage and current D. voltage resistance and charge
6	Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then	A. R₁= 2R₂ B. R₂= 2R₁ C. R₂=4R₁ D. R₁= 4R₂
7	One coulomb of charge is created by	A. 10 electrons B. 1.6 x 10^-19electrons C. 6.25 x 10¹⁸electrons D. 6.25 x 10²¹electrons
8	Surface density of charge is defined as	A. Charge per unit volume B. Charge per unit length C. Charge per unit area D. Charge per unit mass
9	Which of the following does not obey ohm's law?	A. Copper B. Al C. Diode D. None
10	The SI unit of electric flux is	A. Weber B. Nm²C^-1 C. NmC^-1 D. Nm^-2C

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ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

Physics ECAT Pre Engineering Chapter 12 Electrostatics

Coulomb force, when any material medium is placed between two charges

Current provided by a battery is maximum when

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

The current through a metallic conductor is due to the motion of

A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

One joule is equal to

The electric field due to an infinite long thin wire at a distance R varies as

Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?

The ohm's is defined as

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

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

The electrode connected with the positive terminal of the current source is called

A condenser of capacity 50μF is charged to 10 V.The energy stored is

Electron volt is the unit of.

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

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

Which of the following represents an electric current?

106electrons are moving through a wire per second, the current developed is

The electric intensity outside the two oppositely charged parallel metal plates is

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

Electron volt is the unit of

A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes

The electric flux is linked with a surface will be maximum when

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

One coulomb of charge is created by

The dot product of electric field intensity E and vector area A is called

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

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

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ECAT Physics Chapter 12 Important MCQ's

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10⁶electrons are moving through a wire per second, the current developed is