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	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
2	The unit of intensity of electric field is	A. newton/coluomb B. jule/coluomb C. volt x metre D. newton/metre
3	What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?	A. 10^-1A B. 10^-2A C. 10^-4A D. 1 mA
4	When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates	A. Decreases B. Increases C. No change D. May increase or decresase
5	A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance	A. Increase k time B. Decreases k times C. Decreases 1/K times D. Remains unchanged
6	In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called	A. Time constant B. Decay constant C. None of these D. All of above
7	The capacitance of a parallel plate capacitor depends upon	A. Area of the plates B. Separation between the plates C. Medium between the plates D. All of the above
8	If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be	A. 0.1 watt B. 1 watt C. 10 watt D. 100 watt
9	The resistance of a conductor does not depend on its	A. mass B. resistivity C. length D. cross-sectional area
10	A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is	A. Charge Q B. Potential V C. Capacity D. Energy U

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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

Physicist George Simon ohm was a

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

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)

The potential difference across each resistance in series combination is

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

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

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

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

Magnetic effect at a point caused due to flow a current depend upon the

Equal charges are given to two spheres of different radii. The potential will

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

One electron volt is equal to

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

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)

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 60 W bulb operates on 220 V supply. The current flowing through the bulb is

One coulomb of charge is created by

The SI unit of electric flux is

Solar cell converts sunlight directly into

The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of

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

The graphical representation of ohm's law is

The speed of randomly moving electrons depends upon

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

At ordinary temperature, an increase in temperature increases the conductivity of

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

Potentiometer is more sensitive than voltmeter, because

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

The ohm's is defined as

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ECAT Physics Chapter 12 Important MCQ's

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