Electric Circuits (Grade 10 NSC Matric Physical Sciences): Flashcards

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Definition of current

Rate of charge flow past a fixed point in circuit

Unit and symbol for current

Ampere (A)

Current formula

I=QΔtI = \frac{Q}{\Delta t}

What is 1 ampere?

1 coulomb of charge passing per second

Conventional current direction

Positive terminal to negative terminal

What does an ammeter measure?

Electric current

How to connect an ammeter

In series

Voltmeter connection vs ammeter connection

Parallel vs series

Units: I, Q, Δt\Delta t in current formula

Amperes (A), coulombs (C), seconds (s)

Charge of one electron

1.6×10−191.6 \times 10^{-19} C

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