0
A portable CD player uses two 1.5v batteries if the current in the cdplayer is 2 a.what is its resistance?
Wiki User
∙ 12y ago
r=1.5/2=0.75
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Can you run a 7 volt battery on a 6 volt portable radio?
The increase in current (assuming resistance is the same and increase in voltage will lead to an increase in current) will fry your portable radio.
Why series arrangement of batteries brighter than parallel arrangement of batteries?
Connecting batteries in series increases available voltage. Connecting them in parallel increases available current. Ohm's law states that when resistance is constant (and a light bulb is a constant resistance, to a point), the current flowing through will be directly proportional to the voltage. And when the voltage doesn't change, the only way to change the flowing current is to lower the resistance - as in, put in a smaller light bulb.
How many amperes does a 6 volt DC battery put out?
That will depend on the sum of the load resistance and the internal resistance of the battery (this is true for all power sources, not just 6 volt batteries). Small compact batteries tend to have higher internal resistance and therefore are more limited in the current they can deliver to a given load than larger batteries.
How many 1.5 V batteries are needed to produce 40mA of current if the resistance is equal to 150?
4
A circuit contains two 1.5 volt batteries and a bulb with resistance of 3 ohms calculate the current?
If the batteries are placed in series then your current would be 1 amp, if the batteries were in parallel then 0.5 amps. Voltage is common in parallel and additive in series. 1.5v + 1.5v = 3v (series) / 3 ohms = 1amp 1.5v (parallel) / 3 ohms = 0.5amps Current = Voltage divided by Resistance
What is the current in the circuit contains two 1.5 volt batteries and 6 ohm light bulb?
If the two batteries are in series, add the voltages. Then use Ohm's Law to calculate the current (that is, divide the voltage by the resistance).
What is the advantages of lead storage batteries?
Enormous initial current, rechargeable, cheap, low internal resistance, availability
Why were batteries invented?
The battery was invented in 1800 by Alessandro Volta. Batteries were invented in order to power objects that needed an electrical current and also needed to be portable.
What are the name of three define elements electricity?
The three basic elements of electricity are: Voltage Current Resistance
Why automobile batteries have low internal resistance?
To supply the current needed to develop some horse power to turn over an engine.
What happens if you connect two batteries of the same voltage positive pole to positive and negative to negative?
If the batteries have EXACTLY the same voltage, then nothing will happen, because there will be no voltage drop in the circuit, and hence no current. If the batteries have SLIGHTLY different voltages, then there will be a voltage drop in the circuit. Since there is low resistance, there might be high current, causing damage and/or an explosion. In all probability, however, there is enough internal resistance in the batteries to simply cause them to equalize in voltage.
What are three things that can run on direct current batteries?
flashlight toy car laser pointer electric wristwatch portable radio hiker's GPS walkie-talkie RC boat smartphone .mp3 player electric car Orthogonal configurators can only run on alternating current batteries. (That's why there are so few orthogonal configurators ... there is no such thing as alternating current batteries.)
