physics module 15
How does the switch turn a light bulb on and off?
A switch is a point on the circuit back and pull away, breaking contact with the rest of the circuit or be pushed in place, making contact with the circuit.
If you pass a current through a conductor and measure the conductors temperature, you will find that the temperature of the conductor increases as a current passes through it why?
All conductors have some resistance, and resistance will convert some of the currents kinetic entry into heat, which will raise the temperature of the conductor.
How does an electrical heater produce heat?
An electrical heaters elements have a certain amount of resistance. This resistance converts the Connecticut or G of electrons into heat.
If current is really the flow of electrons through a conductor, why do circuit diagrams always show current as flowing from the positive side of the battery to the negative side?
Circuit diagrams use conventional current, which is current that flows from positive to negative.
What is conventional current and why do we use it?
Conventional current is current that runs from the positive side of the battery to the negative side. Although we now know that this is physically not what happens in the circuits that we have studied, scientist have used it since electricity was first studied, so we continue to use it to be consistent with all the circuit drives they have been done in the past.
Draw the current that flows in the diagram below. And which of the
Dia in five the elect the thing moves from counterclockwise. Six. There is no break in the conductor in a Do you mind stopping
What is electric current? What units do we use to measure it?
Electric current is defined as the amount of charge that travels pass a fixed point in an electric circuit each second. As a result, the units are columns per second, which are also called apparatus.
Why do use fuses? Explain how they work. What is the main difference between a fuse in a circuit breaker?
If use can only break once. After that, you must replace it with a new one. Circuit breaker can be rest reset over and over again. You could also have explain that a circuit breaker does not really break it simply bends until switch is opened.
What is the difference between a series circuit in a parallel circuit?
In a series circuit, all current has to travel through every component. In a parallel circuit, the current had a choice. Some of the current travels through some of the components, and the rest travels to brothers
Explain the concepts of resistance in your own words.term-1
Resistance is the ability of a material to impede the flow of charge when it is subject to a potential difference.
A string of lights that do not seem to work suddenly all light up when a single bulb is replaced. Is this a series or parallel circuit?
Since the replacement of one bulb allowed current to flow to all the bulbs, the bulbs are hooked up in series.
You observe Two identical bulbs are placed in series in a circuit. Later on, the circuit is rearranged. It uses the same battery, but now, the bulbs or place in parallel. Compare the brightness of the bulbs when they're in series to their brightness when they are in parallel.
The bulls will be brightest when they are in parallel. Think about the lightbulbs as resistors in parallel resistors have significantly lower resistance He is the same in each case, the voltage is the same. For the same voltage, lower resistance means higher current, which means brighter light bulbs.
What does effective resistance mean?
When several resistors are put together in a circuit, they can be reduced to a single resistor. The circuit behaves just as if that one effective resistor was the only thing in the circuit.
Do you observe a string of lights I noticed this on my legs while others are birds out. Is a string of lights a series circuit or a parallel circuit.?
You only way some of the lies could be late what others are not is if the current can choose which path you take. Is the current can choose, this is a parallel circuit.
