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Physics Test 27...

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  • Question 1
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    Three point charges of 1 C, 2 C and 3 C are placed at the corners of an equilateral triangle of side 1 m. The work done (in joules) in bringing these charges to the vertices of a smaller similar triangle of side 0.5 m is

  • Question 2
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    Three capacitors, each of capacity 4 µF, are to be connected in such a way that the effective capacitance is 6 µF. This can be done by

  • Question 3
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    A 3 μF capacitor is charged to a potential of 300 V and a 2 μF capacitor is charged to a potential of 200 V. The capacitors are then connected in parallel with plates of opposite polarity joined together. What amount of charge will flow when the plates are so connected

  • Question 4
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    An insulator plate is passed through the plates of a capacitor as shown. The current

  • Question 5
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    Directions For Questions

    Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

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    Assertion: The electric flux of the electric field ∮ E.dA is zero. The electric field is zero everywhere on the surface.

    Reason: The charge inside the surface is zero.

  • Question 6
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    Directions For Questions

    Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

    ...view full instructions

    Assertion: On bringing a positively charged rod near the uncharged conductor, the conductor gets attracted towards the rod.

    Reason: The electric field lines of the charged rod are perpendicular to the surface of the conductor.

  • Question 7
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    Two parallel, large and thin metal plates have equal surface charge densities (σ = 26.4 x 10-12 C/m2) of opposite signs. The electric field between these plates is

  • Question 8
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    When a conductor is placed in an electric field; its free charge carriers adjust itself in order to oppose the electric field. This happen until

  • Question 9
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    The electric field inside a dielectric decreases, when it is placed in an external electric field. This happens due to ________

  • Question 10
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    The magnetic field inside a toroidal solenoid of radius R is B. If the current through it is doubled and its radius is also doubled keeping the number of turns per unit length the same; magnetic field produced by it will be:

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