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 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
2	The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is	A. 9 x 10⁵V B. 9 V C. 8 x 10⁶V D. 80 V
3	If the two charges in Coulomb's law have double distance between them, then electric force	A. Becomes two-fold B. Becomes four-fold C. Remains the same D. None of these
4	Electron volt is the unit of	A. Potential difference B. Energy C. Resistance D. Capacitance
5	If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be	A. 5μF B. 20μF C. 10μF D. 15μF
6	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
7		A. 5μF B. 10μF C. 3μF D. 6μF
8	The current through a metallic conductor is due to the motion of	A. protons B. neutrons C. electrons D. free electrons
9	Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is	A. 11.0 ohm B. 1.0 ohm C. 7.0 ohm D. 3.0 ohm
10	One coulomb per second is equal to	A. One volt B. One ampere C. One hom D. One henry

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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 resistivity of a substance depends upon the

Battery is charged in motor cars, which is based on

Current provided by a battery is maximum when

The potential difference across each resistance in series combination is

The energy stored in a charge capacitor

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

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 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

Resistor is a device which convert electric energy to

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

The charge per unit time through any cross-section of a conductor is called

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

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

Which one of the following causes production of heat when current is set up in a wire?

A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

The fractional change in resistance per kelvin is known as

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 electric flux is linked with a surface will be maximum when

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

The SI unit of current is

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

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

The electric field will be uniform

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

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

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

Ohm's law states that

Solar cell converts sunlight directly into

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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

A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is

Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then

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