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What happens when a 5.9 volts dynamo is connected to a 9 volts battery?
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How many volts and cells does a car battery have?
Usually around 12 volts from six 2 volts cells connected in series.
A voltmeter is connected to the terminals of a battery that has emf 12.0V and internal resistance 3.00 ohms The battery is not connected to any other external circuitry What is the vmeter's reading?
The voltmeter would read 12 volts. An ammeter connected to to battery would only read 4 amps (12 volts divided by 3 ohms =4)
How many volts are two 9volts batterys?
Depends on how you connect them together. Connected them in a series and you will have 18 volts. Connected them in parallel and you will still have 9 volts just double the capacity of 1 battery. Click the link to see these 2 connections.
Why are batteries placed in a flashlight the positive terminal of one is connected to the negative terminal of the next?
Because they are connected in series. Lets say you have a flashlight that holds 2 D cell batteries. Each battery puts out 1.5 volts. Connect them in series and together they put out 3 volts. The flashlight is designed to run on 3 volts. A electronic device that uses 4 AA batteries is using 6 volts even though each battery is only putting out 1.5 volts. Connected in series you add to the voltage with the addition of each new battery.
When you connected a voltmeter across a battery it read 6 volts When a connected a motor to the battery and switched on the reading dropped a lot Why?
i think it is because some energy is being lost throug the motor's consumption.
If you connected a battery to a usb cord with some wire and connected that to another device would it charge?
depends on the voltage of the battery being used. USB voltage is 5 volts DC. If you use a car battery, which is generally 12 volts, I would think your device would not like this. But to answer your question. Yes, it will charge. But not properly if you do not use the correct voltage.
How many cells are needed to make a 4.5V battery?
For the most common battery chemistry, 3 cells of 1.5 volt each.
What does a car battery do in a car?
Powers the starter motor and all the other electrics in the car when the engine is not running. When the engine is running, the battery is not needed because the alternator of which works very much like a bicycle dynamo runs all of the electrics in the car. It also keeps the battery charged. If fitted to a bicycle a dynamo will generate electricity to the bike lights when you peddle. An alternator does the same thing but with engine power instead of peddle power. the only difference between a dynamo and an alternator is that an alternator alternates the current from AC to DC a dynamo does not.
Can a diagram for two 12V deep cycle motor home batteries connected to output 12V be supplied?
You just connect them in Parallel. Two 12 volt batteries connected in parallel will output 12 volts. Two connected in Series will output 24 volts. Just connect the negative terminal on the first battery to the negative on the second battery. Then connect the positive terminal on first battery to the positive on the second battery. Connect the cables to the second battery, positive to positive and negative to negative. Click the link for a diagram.
Can two 8 volt batteries make 16 volts?
Yes, if you connect the two batteries in series. You will then have 16 volts, but the current will stay the same as if you only had one battery connected.
When do you use a series circuit?
In resistive circuits,when you need the same current in the whole circuit,you use series circuit because in series circuit current remains the same.If you have two batteries of 12 volts each,and you need 24 volts you can arrange them in series to get 24 volts you have to connect them combine with opposite terminals.positive of one battery will connected with negative of other battery,and negative of second will connected with the first's battery positive terminal,they are in series now.
A battery consists of five dry cells connected in series. If the voltage dev eloped by each cell is 1.5 V the total voltage developed by the battery is?
7.5 Volts
