Electrical current transfers energy around circuits. There are two different types of circuits – series and parallel.
What does a resistor do?
Allows the current to go one way only
Limits potential difference
What is the job of a diode?
To convert ac to dc
To prevent current flow in both directions
To increase in resistance when exposed to a temperature rise
Which statement about parallel circuits is correct?
The current flowing through each loop is always the same
The potential difference across each loop is always the same
The resistance of each loop is always the same
What is the unit of electrical charge?
What happens when a charge moves through a potential difference?
Work is done
Energy is dissipated
What is another term for potential difference?
25 C of charge transfers 50 J of energy between two points. What is the potential difference between those points?
0.1 C of charge moves through a potential difference of 5 V. What amount of energy is transferred?
What is the potential difference when 4,350 C of charge transfers 1,000,000 J of energy?
What is the relative brightness of six bulbs in a series circuit?
The middle two will be brightest
All are equal in brightness
The ones nearer to the battery are brighter