PPSC Physics Chapter 6 Electricity and Magnetism With Answers

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PPSC Physics Chapter 6 Electricity and Magnetism

Sr. # Questions Answers Choice
1 Which one of the following is diamagnetic Liquid oxygen Air Water Copper sulphate
2 All the magnetic materials lose their magnetic properties when Dipped in oil Dipped in water Heated Cooled
3 The susceptibility of a paramagnetic material is negative Positive Zero Infinity
4 Which material has the highest magnetic susceptibility. Steel Brass Iron Wood
5 The permeability of air is 0.5 zero infinity Unity
6 The unit of magnetic induction is. weber -metre weber -metre 2 weber-meter-2 weber-metre-1
7 The SI unit of magnetic flux is gauss Maxwell Oersted Water
8 Which magnetic properties is inherent in all materials. Para magnetism diamagnetism Ferromagnetism demagnetism
9 Two magnetic lines of force Out near the poles Never cut each other Cut at a neutral point Cut according to position of the magnet
10 At which temperature a ferromagnetic material becomes paramagnetic on healing. Kelvin temperature Celsius temperature Curie temperature Fahrenheit temperature
11 The emf induced by the motion of a conductor across a magnetic field is called. Absolute potential Motional emf Induced emf Terminal potnetial
12 If we make the magnetic field stronger the value of induced emf is. Decreased Increased Vanished Kept constant
13 The induced current in a circuit can be increased by Using a strong magnetic field Moving the loop faster Replacing the loop by a coil of many turns All of the above
14 Induced current in a circuit depends upon The speed with which the conductor moves in the magnetic field Resistance of the loop Direction of the loop Shape of the loop
15 The strength of the magnetic field around the current carrying conductor is Smaller near the conductor Greater near the conductor constant everywhere Changing everwhere
16 Magnetic flux with a closed circuit depends Directly on number of turns of the coil Inversely on number of turns of the coil On geometry of the circuit Nature of the charges
17 A galvanometer can be converted into voltmeter by connecting in series with the galvanometer a Low resistance High resistance Resistance of intermediate range Shunt
18 Tesla is the unit for measuirng Magnetic intensity Magnetic induction Magnetic moment Electric potential
19 What is the value of earth's magnetics fields. 5 G 50 G 100 G 500 G
20 Which of the following remains unaffected in a magnetic field. a particles b partciles gama particles Electrons
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