Electricity Flashcards
1
Q
When does static electricity occur?
A
When the positive and negative charges are unbalanced
2
Q
What do we call the area around a charge?
A
An electric field
3
Q
What causes resistance?
A
An something which makes it difficult for the current to flow.
4
Q
What is the equation that links voltage, current and resistance?
A
Current (amps) X Resistance (ohms) = Voltage (volts)
5
Q
What affects the strength of an electromagnet?
A
The amount of coils of wire around the core.
6
Q
What are the components of a motor?
A
A magnetic field with a current flowing through
