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	The unit of conductance is	A. ohm B. meter C. mho D. ohm-meter
2	The potential difference across each resistance in series combination is	A. same B. different C. zero D. none of these
3	Which one of the following is the unit of electric field intensity	A. JC^-1 B. Vm^-1 C. Cm^-1 D. CJ^-1
4	The concept of field theory was put forward by	A. Franklin B. Kepler C. Oersted D. Michael Faraday
5	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	A. 2 R B. R C. R/2 D. R/4
6	The electrode connected with the positive terminal of the current source is called	A. cathode B. anode C. electrolyte D. position
7	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
8	The fractional change in resistance per kelvin is known as	A. temperature coefficient B. resistance coefficient C. super temperature D. critical temperature
9	The electric intensity outside the two oppositely charged parallel metal plates is	A. Maximum B. Minimum C. Zero D. Infinite
10	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

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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

The charge carriers in gases are

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

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

The resistivity of a substance depends upon the

One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is

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

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

The liquid which conduct current is known as

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

Specific resistance of a wire depends upon

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

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

One coulomb per second is equal to

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 SI unit of capacitance is

Current provided by a battery is maximum when

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

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)

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

The SI unit of permitivity is

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

The relation V = IR represents

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

Physicist George Simon ohm was a

In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be

The potential difference across each resistance in series combination is

The unit of resistance is

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

Thermocouple is an arrangement of two different metals

Surface density of charge is defined as

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ECAT Physics Chapter 12 Important MCQ's

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A car battery has e.m.f 12 volt and internal resistance 5 x 10^-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

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