Current in metals and electrolytes
Answers are for parents and teachers.
1
Current 0.5 A, time 10 s. The charge passed in C?
5
2
A charge of 24 C passed in 8 s. The current in A?
3
3
Explain the words “anode” and “cathode” in an electrolyte.
The anode is the electrode connected to the “+” of the source; the cathode to the “–”.
4
Explain the ionic bond using NaCl as an example.
Na gives one electron and becomes Na⁺, Cl takes it and becomes Cl⁻; the ions are held by electric attraction.
5
In a sentence of your own, say why a metal conductor heats when current flows.
The electrons collide with ions and give them part of their energy.