PE - Paper 1 Flashcards
(5 cards)
1
Q
Why does hair stand up when touching a metal static generator?
A
The negatively charged electrons move from the metal dome to the student’s hand and then to the hair. The hairs then become negatively charged and the hair strands repel each other as like charges repel, causing it to stand up.
2
Q
What is an electric field?
A
The region around a charged object where another charged object experiences a force.
3
Q
What is a random error?
A
Variations in readings that occur unpredictably, causing measurements to be spread around the true value.
4
Q
What is a systematic error?
A
An error that consistently causes measurements to deviate from the true value by a fixed amount.
5
Q
What is a zero error?
A
