PPSC Physics Chapter 6 Electricity and Magnetism With Answers

image
image
image

PPSC Physics Chapter 6 Electricity and Magnetism

Sr. # Questions Answers Choice
1 The net charge on a condenser is Zero Q/2 2Q Infinity
2 What is the traditional name for a capacitor Choke Condenser Transformer Inductor
3 What happens to the energy of a charged condenser is plate separation is increased. It decreases It increases It becomes zero It remains unchanged
4 In which form energy is stored in acondenser. Electric energy Potential energy Kinetic energy Magnetic energy
5 Lines of force are imaginary lines drawn so as to be energy point. parallel to equipotential surface Normal to the electric field Indicative of the position of the nearest source charge Tangent to the electric field
6 The electric field intensity of a point charge varies. Directly as the square of the distance from the charge Directly as the square of the charge Inversely as teh distance from the charge. Inversely as the square of the distance from the charge
7 When a point charge which is responsible for a force being exerted on another point charge is suddenly moved the second charge experience. Nor charge of force An instantaneous change of force A sudden change of force of some later time an increase of its charge because of induction.
8 The force exerted by two charged bodies on another obeys Coulomb's law provided that Both bodies are in the same medium the charges are not too great On body does not lie inside the other The linear dimensions of the body are very much less than the distance between the bodies.
9 A device used to detect and measure charge is. A voltmeter An ammeter An electroscope An amplifier
10 Coulomb found that the mutual force between tow electric charges varies. Inversely as the distance Inversely as the square of the distance directly as the distance Directly as the distance squared
11 Which of the following is an electrical insulator that can be polarized by an applied electric field. Conductor Condenser Di electric Capacitor
12 Which of the following is the ability to hold an electric charge in electromagnetism. Resistance Impedance Inductance Capacitance
13 A charge kept at the centre of a shell The shell has charge Q and radius R The force on the central charge due to shell is in the upward direction Towards left Towards right Zero
14 No current flows between two charged bodies when connected if they have same. Charge Capacity Potential Shape
15 In comparison with the electrostatic force between two electrons the electrostatic force between two protons is. Zero Smaller Greater Same
16 A charged capacitor has charge on its Outside surface Inner surface Surroundings Mid point
17 Force acting on a test charge between the plates of a parallel plate capacitor is F. If one of the plates is removed teh force on the same test charge will be. Zero F/2 F 2 F
18 If the number of coulombs per second through a wire of 10 Ohm resistance across a 120 V line is 12, the current is 5 A 10 A 12 A 15 A
19 When a current of 2 A flows for 5 s through a lamp 120 W of power are used How much charge flows through the lamp. 10 C 12 C 24 C 60 C
20 When 5 C of charge flows through a particular resistor 10 J of energy is converted What is the p.d. across the resistor. 0.5 V 2.0 V 15 V 50 V
Download This Set

Is this page helpful?

×