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 electric lines of force are	A. Imaginary B. Physically existing everywhere C. Physically existing near the charge D. All of the above
2	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)	A. 2 B. 1 C. 0.5 D. 1.5
3	If 2.2 kilowatt power is transmitted through a 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
4	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
5	Resistor is a device which convert electric energy to	A. Heat energy B. Chemical energy C. Elastic energy D. All of the above
6		A. 5μF B. 10μF C. 3μF D. 6μF
7	The relation between charge 'Q' and current 'I' is given by	A. Q = I/t B. Q = It C. Q = I²t D. Q = I²/t
8	A 60 W bulb operates on 220 V supply. The current flowing through the bulb is	A. 11/3 A B. 3 A C. 3/11 A D. 6
9	The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10^-19N, is	A. 25 B. 225 C. 625 D. 1250
10	Electron volt is the unit of	A. Potential difference B. Energy C. Resistance D. Capacitance

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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

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?

Specific resistance of a wire depends upon

The SI unit of conductivity is

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

The potential difference across each resistance in series combination is

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

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

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

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

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

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

Solar cell converts sunlight directly into

If the distance of separation between two chares is increased, the electrical potential energy of the system will

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

The SI unit of permitivity is

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

The electric field will be uniform

In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, 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)

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

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

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

The electric intensity at infinite distance from the point charge will be

Ohm established a relation between

A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when

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

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

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

Ohm's law states that

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An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy will be

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10^-19N, is