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20 questions
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  • Q1

    Which of the following is true about electric charge?

    It is created from a chemical reaction

    It can be transferred from atom to atom

    It can be lost

    It can be destroyed

    30s
    STEM_GP12EMIIIa-3
  • Q2

    A neutral object

    is attracted to positively charged objects only

    is attracted to negatively charged objects only

    is repelled by a negatively or a positively charged object

    is attracted to either a negatively or a positively charged object

    30s
    STEM_GP12EMIIIa-1
  • Q3

    What happens when a positively charged rod is brought near a neutral plastic ball?

    protons on the ball are attracted to the positive rod and move to the near side of the ball

    the protons on the ball repelled by the positive rod and move to the far side of the ball

    electrons in the ball are attracted to the near side of the ball

    electrons in the ball are repelled to the far side of the plastic ball

    30s
    STEM_GP12EMIIIa-2
  • Q4

    What do you call the law that quantifies the force of attraction and repulsion between charged bodies?

    Faraday’s Law

    Cavendish’s Law

    Newton’s Law 

    Coulomb’s Law 

    30s
    STEM_GP12EMIIIa-2
  • Q5

    How can object becomes positively charged?

    Neutrons are removed from it

    Protons are added to it

    It loses electrons

    The number of electrons is increased

    30s
    STEM_GP12EMIIIa-2
  • Q6

    Which, among the following is the correct expression for an electric field?

    E = F/Q

    E = FQ

    E = F/C

    E = FC

    30s
    STEM_GP12EMIIIa-7
  • Q7

    The direction of electric field due +Q positive charge is……

    None of the above

    Both A and B

    away from the charge

    towards the charge

    30s
    STEM_GP12EMIIIa-6
  • Q8

    The electric field intensity at a point situated 4 metres from a point charge is 200 N/C. If the distance is reduced to 2 metres, the field intensity will be

    800 N/C

    600 N/C

    400 N/C

    1200 N/C

    30s
    STEM_GP12EMIIIb-12
  • Q9

    If Q2 and Q3 are separated by a distance of 20 cm and have the same charge of 50µC, what is the magnitude of the force between them?

    112.5 N

    0.056 N

    1.125 N

    562.5 N

    30s
    STEM_GP12EMIIIa-10
  • Q10

    If Q1  is -20nC and Q2  is +50µC are separated by a distance of 10 mm, what is the magnitude of the force between them and the nature of force

    90 N Repulsion

    70 N Attraction

    70 N Neutral  

    90 N Attraction

    30s
    STEM_GP12EMIIIa-10
  • Q11

    “Total electric flux through any closed surface is equal to the charge enclosed by that surface divided by permittivity”. This is the statement for?

    Lenz law

    Gauss law

    Coloumb’s law

    Faraday’s law

    30s
    STEM_GP12EMIIIb-13
  • Q12

    What is the insulating material that is placed in between capacitors to maintain the smallest possible separation between the plates?

    diatomic 

    dielectric

    drape

    diode

    30s
    STEM_GP12EM-IIIb-15
  • Q13

    It is the storehouse of energy for electrical devices.

    capacitance

    capacitor

    resistor

    battery

    30s
  • Q14

    Which of the following statements is TRUE?

    Farad is equivalent to joule per second

    The SI unit for capacitance is farad

    Capacitance increases when capacitors are connected in a series

    Capacitance is the ratio between charge and resistor

    30s
    STEM_GP12EM-IIIb-15
  • Q15

    Which of the following statements is TRUE about capacitors?

    In series, the equivalent resistance increases

    In parallel, the equivalent resistance decreases

    In series connection, all have the same amount of charge

    In series connection, voltage is the same

    30s
    STEM_GP12EM-IIId-25

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