Quantisation of charge was experimentally demonstrated by

Millikan’s oil drop experiment

Einstein’s photoelectric effect

Pick the correct statements about electric field lines

It provides information about the direction of the electric field

Electric field lines provide information about the field strength

Electric field lines provide information about the type of charge

The dimensional formula of electric charge is given by,

[M⁰L⁰ T¹I¹]

Where,

Electric charge (Q) = current × time . . . . (1)

The dimensional formula of,

Current = [I¹] . . . . (2)

Time = [T¹] . . . . (3)

From equation (1), (2) and (3) we get,

Since, electric charge = current × time

Or, Q = [I¹] × [T¹] = [T¹I¹]

Therefore, the electric charge is dimensionally represented as [M⁰L⁰ T¹I¹].

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