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Why cathode rays are negatively charged?
Cathode rays are negatively charged because they are composed of electrons, which have a negative charge. When a high voltage is applied to the cathode in a vacuum tube, electrons are emitted from the cathode and accelerated towards the anode, creating a beam of negatively charged particles known as cathode rays.
What happens to a bulb when you move it closer to a battery on a circuit?
The bulb will get brighter
Why gate is closer to cathode in scr?
A: To partially eliminate the problems with cathode current hugging
Can 5v charger charge a 7.5v battery?
yes it just takes longer to charge, but check how much Amps (A) your charger gives out and how much Amps your battery can take if the battery has lower Amperage (A), don't do it, otherwise you're fine. <<>> No, the charging unit has to have a higher output that the battery voltage that it is charging. For example, on a 12 volt car battery the charging rate is 13.5 volts.
What is the total voltage if 12v 6v and 2.5v batteries are connected in parallel?
Don't try it in real life -- the batteries will become extremely hot and catch fire. Theoretically, the circuit is not allowed -- fundamentally impossible. Each battery can be thought of as a voltage source in series with a variable resistance (the internal resistance of the battery). If you connect these in parallel, the 12 volt battery will attempt to bring the parallel voltage up to 12 volts. To do so, it will push current out to the other two batteries. The other two batteries will supply their respective voltage to try to counteract this. They will begin to heat up; As the 12 volt battery supplies current above what it is designed to provide, its' internal resistance will increase, causing an increased voltage drop inside the battery (causing more heating in the 12 volt battery), which causes the 12 volts it is trying to push out to drop to closer to the other batteries voltages. the 2.5 and 6 volt batteries' internal resistances will also increase as they accept the current from the 12 volt battery, allowing the parallel voltage to increase to closer to what the 12 volt battery wants. This will continue until only one battery survives, most likely.
What will happen to a bulb when you move it closer to the battery on a circuit?
When you move a bulb closer to the battery in a circuit, it will receive more electrical energy as the resistance decreases. This will cause the bulb to shine brighter due to the increased flow of electrical current passing through it.
How can you test your alternator if your battery is dead?
A lot of auto part stores will test them for free. Give them a call. Your alternator can only be tested when the engine is running, therefore you will have to get a boost or use a battery charger for the battery. If you have a voltmeter, test at the battery terminals with engine still running, if you get 13.5 to 14.7 volts, the alternator is charging. In some cars, the voltage could go over 15 volts if the battery is close to dead (right after being boosted), but the voltage should go back to normal as the battery gets closer to fully charged. Turn off the engine, the voltage will go down to 12.5 volts if the battery is now charged, lower if is not. If there is no change, the alternator is not charging. KGP484
Would the voltage regulater keep from charging your battery?
The voltage regulator regulates the output of the alternator or generator, depending on what you have. today it is mostly alternators that are regulated to 14.4 volts, but you are fine if it is putting out 13.25-14.9 volts lower than 12.5 volts will not charge a 12 volt battery and over 15 volts will boil or explode the battery. 6 volt systems will usually charge 6.5-7 volts. if the charging system is putting out that voltage, and the battery is still going down first check for bad connections, and charge the battery, if that still does not fix it have the battery checked, most parts stores offer some form of a test for a battery and can lead you closer to the problem if the battery is not the problem.
Does more ah in a battery mean its stronger?
Depends on what you mean by stronger. Ah stands for ampere hour, which is a unit of energy. A battery with 1 Ah can deliver a current of 1 Ampere for 1 hour, or 2 Amperes for 30 minutes, etc. The voltage of a battery tells you how much current the battery will produce through a given resistance; more voltage is probably closer to what you mean by stronger, since knowing the current and the voltage allows you to know the power released by the battery. So, for a given resistance, more voltage = more power released by the battery. So: more Ah is like having a larger gas tank; more voltage is like having more horse power.
What happens when the voltage in a source of electricity becomes greater?
The free electrons at the negative pole get closer together, the free electrons left at the positive pole get further apart, more current starts to bleed through all the "insulators" of the voltage source.
What would cause battery drain overnight on a ford escort 1998?
It could be a dome light. To find out what is draining the battery overnight you need to take off the negative battery terminal and put a test light or Voltage tester between the 2 terminals. With everything off and all the doors shut or open if you have the dome light turned off, the test light or voltage tester will light up or show voltage. Go to the fuse block and take a fuse out one by one. If the light goes out when you pull a particular fuse, then that is the circuit that is draining the battery and you can take a closer look at it.
Why does the DNA fragment size change as you move from the cathode to the anode?
In gel electrophoresis, DNA fragments move towards the anode (positive electrode) because DNA is negatively charged. Smaller fragments move faster through the gel matrix, so they appear closer to the anode while larger fragments move slower and appear closer to the cathode. This results in separation of DNA fragments based on size.
