Quantisation of Charge (Grade 10 NSC Matric Physical Sciences): Flashcards

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Quantisation of Charge
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Symbol & value of elementary charge

e=1.6×10−19e = 1.6 \times 10^{-19} C

Formula for charge quantisation

Q=neQ = ne where nn = no. of charges, ee = elementary charge

What charge quantisation means

Charge exists only in whole number multiples of ee

Charge sharing formula (identical conducting spheres)

Q=Q1+Q22Q = \frac{Q_1 + Q_2}{2}

Conductor behavior when touching

Share charge equally

Insulator behavior when touching

Keep their original charges unchanged

Purpose of an electroscope

Device to detect electric charge

Electrostatic force rule

Like charges repel, unlike charges attract

Definition of polarisation

Slight charge separation in insulators without gaining/losing e−e^-

What grounding does

Connects to earth, allows excess charge to flow away

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