6054169
| Pregunta | Respuesta |
| How Do You Identify Atom/Ion Charges? | when an atom has 1 electron in it's outer shell that means it's positively charged because it can give that electron away and so forth. also it can be +4 or -4 |
| What Are The Different Units And How Are They Measured? | Voltage (V) - voltmeter Current (A) - ammeter Resistance (Ω - ohms) - o-meter |
| How Do You Apply OHM's Law? | V = Voltage (V) I = Current (A) R = Resistance (Ω) |
| Where Do You Put A Voltmeter Into A Circuit? | always put voltmeter in parallel. it measures the difference between two points in a circuit so it must be in parallel |
| Where Do You Put An Ammeter Into A Circuit? | always put ammeter in series. it measures the flow of electrons therefore the electrons must flow through it so it must be in series |
| How Does Resistance Of A Wire Work? | the resistance of a wire is how easy it is for current to flow through it. the thicker the wire - less resistance. material - the more conductive the better (copper - low , iron - high) and the length (longer - more, shorter - less) |
| What Does A Transformer Do? | transformers can change the voltage (higher or lower) and is safer at a lower voltage |
| What Is A Parallel Circuit? | it's when more than one path goes back to the battery. multiple switches, add more globes without it dimming. |
| What Is A Series Circuit? | only one switch. it’s a cheaper circuit because less wire. the current flows through one path and if you add globes they share the voltage |
| Which Circuit Is Better? Parallel or Series and Why? | parallel is better than series in many situations because there is more than one path that the current can flow |
| What Are Some Different Conductors and Insulators? | conducters - most types of metal insulators - rubber, corks, plastic |
| What Are The Symbols In A Circuit? | |
| What Is A Wet Cell? | they've liquid and are often larger and heavier. the liquid is electrolyte and has two or more metals. it's normally copper and zinc or copper and lead - because one is more reactive than the other. one wants to collect electrons and the other wants to lose them making electrons flow across |
| What Is A Dry Cell? | dry cells are smaller and lighter and generally won’t spill the corrosive paste inside (e.g. remote battery) |
| What Happens When You Add A Battery To A Circuit? | you add it voltage so if you had one 2V battery, you only have 2V but if you add three 2V batteries you have 6V |
| What Are Some Facts About A Fuse? | it has high resistance, low conductivity and a low melting point. when resisting the flow of electrons, the electrons slow and get hot. it protects components in a circuit if something short circuits. when it breaks the current stops flowing. |
| What Is A Circuit Breaker? | it is a bit of curved metal. expands when it heats up and blocks the circuit, contracts when it cools down and the circuit reconnects. a circuit breaker doesn’t have to be replaced |
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