ECAT Pre Computer Science Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 12 Electrostatics

Try The MCQ's Test For ECAT Physics Chapter 12 Electrostatics

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ECAT Physics Chapter 12 Electrostatics

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Question # 1

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

Question # 2

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

Question # 3

The SI unit of current is

Question # 4

What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?

Question # 5

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

Question # 6

Which of the following does not obey ohm's law?

Question # 7

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

Question # 8

In a voltmeter the conduction takes place due to

Question # 9

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

Question # 10

A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be

Question # 11

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

Question # 12

The electric field will be uniform

Question # 13

The SI unit of electric field intensity is

Question # 14

The unit of intensity of electric field is

Question # 15

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

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 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
2 The resistance of a conductor does not depend on its
A. mass
B. resistivity
C. length
D. cross-sectional area
3 Equal charges are given to two spheres of different radii. The potential will
A. Be more on the smaller sphere
B. Be more on the bigger sphere
C. Be equal on both the sphere
D. Depend on the nature of the material of the sphere
4 The capacity of a parallel plat capacitor depends on the
A. Type to metal used
B. Thickness of plates
C. Potential applied across the plates
D. Separation between the plates
5 Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved
A. 1.92 N
B. 19.2 N
C. 12 N
D. 0.192 N
6 Thermocouple is an arrangement of two different metals
A. To convert heat energy in to electrical energy
B. To produce more heat
C. To convert heat energy into chemical energy
D. To convert electric energy in to heat energy
7 Electron volt is the unit of.
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
8 Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become
A. -10 N
B. +10 N
C. +20 N
D. -20 N
9 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
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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