Which of the following is not true about electric charge?
Which of the following is not true about electric charge?
- A
Charge is a scalar quantity
- B
Charge on an isolated system is always conserved
- C
A particle having nonzero rest mass can have zero charge
- D
A particle having zero rest mass can have non zero charge
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Charge on $\alpha $ - particle is
Charge on $\alpha $ - particle is
Who represented the quantization of electric charge first and on what basis ?
Who represented the quantization of electric charge first and on what basis ?
Why does matter obtain electric charge ?
Why does matter obtain electric charge ?
It is now believed that protons and neutrons (which constitute nuclei of ordinary matter) are themselves built out of more elementary units called quarks. A proton and a neutron consist of three quarks each. Two types of quarks, the so called 'up' quark (denoted by $u$) of charge $+(2 / 3) e,$ and the 'down' quark (denoted by $d$) of charge $(-1 / 3) e$ together with electrons build up ordinary matter. (Quarks of other types have also been found which give rise to different unusual varieties of matter.) Suggest a possible quark composition of a proton and neutron.
It is now believed that protons and neutrons (which constitute nuclei of ordinary matter) are themselves built out of more elementary units called quarks. A proton and a neutron consist of three quarks each. Two types of quarks, the so called 'up' quark (denoted by $u$) of charge $+(2 / 3) e,$ and the 'down' quark (denoted by $d$) of charge $(-1 / 3) e$ together with electrons build up ordinary matter. (Quarks of other types have also been found which give rise to different unusual varieties of matter.) Suggest a possible quark composition of a proton and neutron.
A soap bubble is given a negative charge, then its radius
A soap bubble is given a negative charge, then its radius