Electricity
Class 10th Science
TOPICS I N THIS CHAPTER : -
- Electric current,
- electric circuit,
- voltage or electric potential,
- resistance and (Ohm’s law)
Electric Current:
The flow of electric charge is known as Electric Current, Electric current is carried by moving electrons through a conductor.
By convention, electric current flows in the opposite direction to the movement of electrons.
By convention, electric current flows in the opposite direction to the movement of electrons.
Electric Circuit: Electric circuit is a continuous and closed path of electric current.
Expression of Electric Current: Electric current is denoted by the letter ‘I’. Electric current is expressed by the rate of flow of electric charges. Rate of flow means, the amount of charge flowing through a particular area in unit time.
If a net electric charge (Q) flows through a cross-section of a conductor in time t, then,
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