22.1 – Investigating Current and Voltage Relationships (Leaving Cert Physics): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What is an ohmic conductor?
What is an ohmic conductor?
Material where ∝ at constant temp
What condition must be maintained for a conductor to show ohmic behaviour?
What condition must be maintained for a conductor to show ohmic behaviour?
Constant temperature
How must an ammeter be connected in this circuit?
How must an ammeter be connected in this circuit?
In series with the circuit
How must the voltmeter be connected to measure voltage across the resistance wire?
How must the voltmeter be connected to measure voltage across the resistance wire?
In parallel with resistance wire
What is the purpose of the variable resistor in this experiment?
What is the purpose of the variable resistor in this experiment?
Control voltage and current values
Why should you start with small voltage values in this experiment?
Why should you start with small voltage values in this experiment?
Prevent wire heating significantly
How many measurements should be taken across a suitable range?
How many measurements should be taken across a suitable range?
At least 6-8 measurements
What should be plotted on the axes when graphing results?
What should be plotted on the axes when graphing results?
on y-axis, on x-axis
What graph result proves the wire is an ohmic conductor?
What graph result proves the wire is an ohmic conductor?
Straight line through origin
What does the gradient of the - graph equal?
What does the gradient of the - graph equal?
Which formula represents Ohm's Law?
Which formula represents Ohm's Law?
Which devices are examples of non-ohmic conductors?
Which devices are examples of non-ohmic conductors?
Diodes and filament bulbs
What is the most critical source of error in this experiment?
What is the most critical source of error in this experiment?
Heating from excessive current
