Electric Current (Junior Cert Engineering): Quizzes
📚Quizzes
Practise the questions
15 questions from this quiz
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Practise the questions
15 questions from this quiz
What is electric current?
What is electric current?
Flow of electrons through a conductor
What charge do electrons carry?
What charge do electrons carry?
Negative charge
Which direction do electrons actually flow in a circuit?
Which direction do electrons actually flow in a circuit?
From negative to positive
What is the conventional current direction used in circuit analysis?
What is the conventional current direction used in circuit analysis?
From positive to negative
Which of these materials is an insulator?
Which of these materials is an insulator?
PVC plastic
What unit is electromotive force (e.m.f.) measured in?
What unit is electromotive force (e.m.f.) measured in?
Volts
What voltage does a carbon/zinc cell provide?
What voltage does a carbon/zinc cell provide?
1.5V
How many times per second does AC in Ireland change direction?
How many times per second does AC in Ireland change direction?
50 times
If voltage is 6V and current is 3A, what is the resistance using Ohm's law?
If voltage is 6V and current is 3A, what is the resistance using Ohm's law?
How many amps equal one milliamp (mA)?
How many amps equal one milliamp (mA)?
1/1000 amp
How must an ammeter be connected in a circuit?
How must an ammeter be connected in a circuit?
In series
How must a voltmeter be connected to measure voltage across a component?
How must a voltmeter be connected to measure voltage across a component?
In parallel
In a series circuit, how does current flow through the components?
In a series circuit, how does current flow through the components?
Current is same through all
In a parallel circuit, what is true about voltage across each branch?
In a parallel circuit, what is true about voltage across each branch?
Voltage is the same
What does a fuse contain to protect circuits?
What does a fuse contain to protect circuits?
A thin wire that melts