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 For D.C. circuit the resistance can be taken as impedance with zero. Volt Ampere Phase angle Watts
2 The magnetic force is simply a Reflecting force Deflecting force Restoring force Gravitational force
3 The sensitivity of the galvanometer can be increased by increasing the Number of turns of the coil Area of the coil Strength of the magnetic field All of the above
4 The direction of force on a moving negative charge will be. Opposite to that of positive charge Similar to that of positive charge At right angel to the positive charge Parallel to the positive charge
5 Which of the following is not the SI unit of magnetic flux density. Wb m2 N A-1 m-1 <br>Tesla N mA-1
6 One weber is equal to. N A-1 N m-1 A N mA-1 N m-1 A-1
7 The SI unit of magnetic flux is. N A-1 N m-1 A N m A-1 N m-1 A-1
8 In the experiment of force on a current carrying conductor in a uniform magnetic field the magnitude of force depends upon which factor. Force is inversely proportional to current Force is directly proportional to current Force is inversely proportional to voltage Force is directly proportional to voltage
9 One Tesla is equal to. 1 N A-1 1 N m-1 1 N A -1 m 1 N A -1 m-1
10 Which one of the following describes a measure of opposition to alternating current. Electrical impedance Capacitance Inductance Admittance
11 The phenomenon of exactly zero electrical resistance occurring in certain materials below a characteristics temperature is called. Resistivity Conductivity Super conductivity Volume resistivity
12 Which materials have exactly zero electrical resistivity. Metals Insulators Semi conductors Super conductors
13 The measure of how strongly a material oppose the flow of electrical current is known as Electrical resistivity Specific electrical resistivity Volume resistivity All of the above
14 Conductance is the reciprocal of. Capacitance Inductance Resistance Admittance
15 In which process the passage of an electric current through a conductor releases heat. Joule heating Ohmic heating resistive heating All of these
16 House hold circuits are mostly Wired in sires Wired in parallel Made using wires of gold Made using wires of silver
17 Which physical law expresses the relationship between the heat generated and the current through a conductor. Ohm's law Kirchoff's law Joule's law Ampere's law
18 Which two terminal passive electronic component implements electrical resistance as a circuit element. Capacitor Inductor Resistor Transformer
19 What units are used to rate electrical fuses. Volts Ampere Watts Hertz
20 The Step up transformer Increase the input current Increases the input voltage Has more turns in the primary coil Has less time in the secondary coil
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