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What is the positively-charged particle ...

What is the positively-charged particle present in an atom called?

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Knowledge Check

  • A proton is kept at rest. A positively charged particle is released from rest at a distance d in its field. Consider two experiments, one ini which the charged particle is also a proton and in another, a position. In the same time t , the work done on the two moving charged particles is

    A
    same as the same force law is involved in the two experiments.
    B
    less for the case of a positron, as the positron moves away more rapidly and the force on it weakens.
    C
    more for the case of a positron, as the positron moves away a larger distance.
    D
    same as the work done by charged particle on the stationary proton.

  • Positronium is just like a H-atom with the proton replaced by the positively charged anti-particle of the electron (called the positron which is as massive as the electron). What would be the ground state energy of positronium ?

    A
    `3.4eV`
    B
    `-5.2eV`
    C
    `-6.8eV`
    D
    `-10.2eV`

  • A positively charged particle is released from rest in a uniform electric field. The electric potential energy of the charge.

    A
    remains a constant because the electric field is uniform.
    B
    increases because the charge moves along the electric field.
    C
    decreases because the charge moves along the electric field.
    D
    decreases because the charge moves opposite to the electric field.

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    True or False: There is a negatively-charged core in the centre of an atom called the nucleus.

    A proton is kept at rest. A positively charged particle is released from rest at a distance d in its field. Consider two experiments, one ini which the charged particle is also a proton and in another, a position. In the same time t , the work done on the two moving charged particles is

    Positronium is just like a H-atom with the proton replaced by the positively charged anti-particle of the electron (called the positron which is as massive as the electron). What would be the ground state energy of positronium ?

    A positively charged particle is released from rest in a uniform electric field. The electric potential energy of the charge.

    A positively charged particle is released from rest in a uniform electric field. The electric potential energy of the charge.

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