C4.1 Electrical charge and voltage

• Natuurkunde
• Middelbare school
• havo, vwo
• Leerjaar 3

Exercise electricity

H4.1 Electrical charge and voltage

Electrons have a .... charge

1. negative
2. positive
3. neutral

Objects repel each other if ...

1. their charges are like
2. their charges are opposite

To create a positive charge ..

1. You need to add protons
2. You need to remove protons
3. You need to add electrons
4. You need to remove electrons

Across the bottom of a thundercloud and the earth is a large voltage.
Explain why the earth becomes positively charged.

The symbol of voltage is

1. U
2. V
3. R
4. A

De eenheid van stroomsterkte is...

1. Volt
2. Ampère
3. Coulomb
4. Ohm

Stroomsterkte is

1. de energie per elektron
2. aantal elektronen per seconde
3. de energie per seconde
4. de moeilijkheid van de schakeling

91 V is equal to

1. 9,1 mV
2. 91 mV
3. 91000 mV
4. 0,091 mV

56 mA is gelijk aan

1. 0,056 A
2. 0,56 A
3. 5,6 A
4. 560 A

U = 9,0 V
R = 30 mΩ
I = ?

1. 300 A
2. 300 mA
3. 270 A
4. 0,27 A

R = 4 Ω
I = 8,6 mA
U = ?

1. 34 V
2. 0,0344 V
3. 465 V
4. 34,4 V