Energy And Magnetism Test Ipad Flashcards
1
Q
- Which of the following will increase the resistance of a wire?
A
- Increasing the temperature of the wire.
Test
2
Q
- Which of the following statements about electric charge is true?
A
- Electrical forces act at a distance.
Test
3
Q
- This contains a piece of metal that melts if it gets too hot in order to open a circuit.
A
- Fuse
Test
4
Q
- Providing a path that allows electric charges to travel directly into the earth rather than traveling through a building.
A
- Grounding
Test
5
Q
- Which circuit below contains the greatest voltage?
A
- A circuit with a current of 25 amps and a resistance of 16 ohms.
Test
6
Q
- Electric charges always flow from ___ areas to ___ areas.
A
- Negative, positive
7
Q
- In a closed circuit containing one resistor and a battery, if the voltage in the battery increases, the current going through the resistor increases. Why does this occur?
A
- As the electrons are pushed more by the battery, they move faster through the circuit.
