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What is the difference between how ammeters and voltmeters are connected in a circuit?
Ammeters are connected in series. Voltmeters are connected in parallel.
What is the difference in internal resistance between ideal ammeters and voltmeters?
Ideal ammeters have very low internal resistance. Ideal voltmeters have very high internal resistance.
What is electric charge?
The fundamental property that causes matter to interact with electromagnetic fields.
What is current (I)?
The rate at which charge flows, measured in Amperes (A). \(I = \frac{\Delta Q}{\Delta t}\)
What is conventional current?
The direction that a *positive* charge would move, even though electrons (negative) are actually moving.
What is drift velocity ((v_d))?
The average velocity of charge carriers in a wire due to an electric field.
What is an ammeter?
A device that measures current in Amperes (A) and is connected in series with the component being measured.
What is a voltmeter?
A device that measures potential difference (voltage) and is connected in parallel across the component being measured.
What is the effect of increasing the cross-sectional area of a wire on the current, assuming other factors remain constant?
The current increases.
What is the effect of increasing the drift velocity of charge carriers on the current, assuming other factors remain constant?
The current increases.
What happens if an ammeter is connected in parallel in a circuit?
It can lead to a short circuit.
What happens if a voltmeter is connected in series in a circuit?
It can lead to inaccurate readings.