PPSC Physics Chapter 6 Electricity and Magnetism With Answers

image
image
image

PPSC Physics Chapter 6 Electricity and Magnetism

Sr. # Questions Answers Choice
1 When a wire moves perpendicularly to a magnetic field, the induced emf does ot depends upon The velocity of the wire The resistance of the wire The flux density of the magnetic The orientation of the wire field
2 The direction of induced emf during electromagnetic induction can be determined by making use of. Faraday's law Ampere;s law Lenz's law Laplace law
3 On which principle the induction coil works on. Self induction Ampere's rule Mutual induction Gauss's law
4 At which temperature a ferromagnetic material is converted into a paramagnetic one. curie temperature Boyle's temperature Natural temperature Neutral temperaturre
5 Which incapability of the materials is represented by the phenomenon of hysteresis. Magnetic saturation Low susceptibility Retrace the path Orientation
6 Para magnetism is. A distrotion effect An orientation effect A skin effect A resistance
7 The cause of ferromagnetism is. Orbital motion of elections spin Motion of electrons Permanent dipole memento Spin angular momentum
8 A capacitor is prefect insulator for Direct current Alternating current Direct as well as alternating current Pulsating current
9 Two pure inductors each of self inductance L are connected in parallel The total inductance of the combination is. L 2L L/2 L/4
10 An induced emf in a coil is independent of Time Resistance the number of turns in a coil The charge in the magnetic flux
11 The value of magnetic field strength for parament magnets is. Unity Infinity Zero Two
12 Magnetic moment is a Scalar Vector Phasor Tensor
13 A magnet is pushed horizontally towards a coil of insulated wire inducting an emf in the coilin which direction does the coil try to move. Downwards Upwards Away from the magnet Towards the magnet
14 The energy stored per unit volume inside the solenoid is called. Energy density Mass density Charge density Volume density
15 The ration of intensity of magnetization to the magnetic force is known as. Parmeability Magnetic induction Magnetic intensity Magnetic susceptibility
16 When a diamagnetic substance is inserted in a current carrying coil the magnetic field is Decreased Increased unchanged Increased or decreased, depending upon the relative volume of the substance
17 Work can be stored in an inductor as. Elastic P.E. Electrical P;E. Gravitational energy K.E.
18 The magnitude of induced emf during electromagnetic induction is controlled by. Magnetic flux electric flux Electric field Magnetic field
19 Which of the following is an example of induced magnetism. A compass needle pointing north A north pole attracting iron filings A northpole repelling a north pole The coil of a motor turning in a magnetic field.
20 A generator produces 100 kW of power of a potential difference of 10 kV the power is transmitted through cables of total resistance 5 Homs How much power is dissipated in the cables. 50 W 250 W 500 W 5,000 W
Download This Set

Is this page helpful?

×