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Navjot Kaur 8 years ago

Electron has negative charge & nucleus has protons carry positive charge. Due to force of attraction between positive and negative charge electrons revolve around nucleus
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Lekha Raj 8 years ago

1)We can not add current vectorially. 2) It does not follow any law of vector algebra.
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Ragni Bhatt 8 years ago

Magnetic field is the space around a conductor carrying current or the space around a magnet in which its magnetic effect can be felt
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Riya Mahesh 8 years ago

Yes if one is bigger than other then it will induce opposite charge on other due to electromagnetic induction and attract the smaller charge
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Uttam Thakur 8 years ago

due to scattering of light
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Anjali Tamboli 8 years ago

just go for main concepts and derivation like in wave optics do interference and diffraction experiment plus proving snells law
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