In circuit building a set of agreed symbols is in use worldwide to represent components.
For each description below, write the name and draw the correct symbol which would be used in a circuit diagram.
In each case select the word to correctly describe an ammeter.
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- In a circuit the current/voltage/resistance is measured using an ammeter, which is always connected in series/parallel within a circuit.
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- An ideal ammeter should have very high/zero resistance. This prevents the ammeter taking any energy from the electrons/positive ions flowing through it.
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- If the electrons transferred their electricity/energy/motion to the ammeter this would change the circuit by reducing/increasing the value of the current it is meant to measure.
A charge of 15.0 C passes through a resistor at a constant rate in 60 s. The potential difference across the resistor is 2.0 V.
Calculate the resistance R of the resistor.
The resistance of a wire is affected by factors including the resistivity of the material it is made from.
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