4.2 voltage sources

Question 1

how do you use a voltmeter?

Answer 1

connect the meter across the positive and negative terminals of the battery

Question 2

what do you measure voltage in?

Answer 2

Volts (V)

Question 3

(this is about electrical voltage)
the higher the tension (a.k.a the voltage) the ___

Answer 3

greater the ‘preassure forcing the charge to move through a circuit

Question 4

what is a capacitor?

Answer 4

• electrical component
• you can store charge in it
• does not provide a constant voltage

Question 5

what do you often use in a circuit? and what does it give you?

Answer 5

a voltage source
gives you constant voltage

Question 6

how many times can you use a normal battery?

Answer 6

only once

Question 7

how can you recharge rechargable batteries?

Answer 7

passing current thorugh them in the opposite direction

Question 8

what is mains voltage?

Answer 8

the voltage of electrical sockets
the mains voltage in the netherlands is 230V

Question 9

what is voltage?

Answer 9

a type of electrical preassure

Question 10

what is voltage source? give an example too

Answer 10

the component of a circuit that provides the voltage.
example: a battery

Question 11

what is a voltmeter?

Answer 11

an instrument you can use for measuring voltages

Question 12

what is a transformer?

Answer 12

a device that converts mains voltage into other voltages (usually lower).