Physics Chapter1

Question 1

What two particles attaract

Answer 1

Protons and electons

Question 2

Where does charges come from?

Answer 2

The cell or battery pushes charges around the circuit. The charges are already in wires.

Question 3

What is a potential difference

Answer 3

The cell or battery that gives the push to keep it moving.

Question 4

How to measure potential difference?

Answer 4

Use a voltmeter and measure in volts (V).

Question 5

What is a serie circuit?

Answer 5

A circuit where all the bulbs forms one loop including the battery and switch.

Question 6

What is a parallel circuit?

Answer 6

There is more than one loop and are driven by the same battery.

Question 7

How to calculate the current?

Answer 7

Current(A)= potential difference (V)
———————————
Resistance (Ω)

Question 8

How to calculate resistance of a component?

Answer 8

Resistance (Ω)= potential difference (V)
———————————
Current (A)

Question 9

What two magnet sides attract?

Answer 9

North Pole and South Pole.

Question 10

How do you find a magnetic field?

Answer 10

Using compasses or iron fillings.