Is this the only information given? Are you sure the 2A current is through R1?sero2000 said:Homework Statement
Given
R3= 10.0Ω
IR1= 2.0A
Prove that Vpri =30( 10R1+R1R2+10R2)/R2
We describe current as going through an element (such as a resistor), rather than across it. Voltage, on the other hand, is measured across an element.Current across R2= 2xR1/R2
Current across R3= 2R1/R2 +2A
Ouabache said:Is this the only information given? Are you sure the 2A current is through R1?
We describe current as going through an element (such as a resistor), rather than across it. Voltage, on the other hand, is measured across an element.
Ouabache said:I thought so, I was just about to add, unless this were an isolation transformer, I would expect a ratio of turns (N1:N2), voltage (Vp:Vs), or current (Ip:Is) to be given.
What was the turns ratio? (I'd like to solve this one too).
A transformer is an electrical device that is used to transfer energy from one circuit to another through electromagnetic induction. It is commonly used to step up or step down the voltage of an alternating current (AC) power supply.
A transformer works by using two coils of wire, known as the primary and secondary windings, that are wrapped around an iron core. When an alternating current flows through the primary winding, it creates a changing magnetic field in the iron core. This changing magnetic field induces a voltage in the secondary winding, which can then be used to power another circuit.
There are two main types of transformers: step-up transformers and step-down transformers. Step-up transformers increase the voltage while decreasing the current, while step-down transformers decrease the voltage while increasing the current. Other types of transformers include isolation transformers, autotransformers, and variable transformers.
Transformers have a wide range of applications, including power distribution, voltage regulation, and electric motors. They are also commonly used in electronic devices such as televisions, computers, and cell phone chargers.
If a transformer is not working properly, there are a few steps you can take to troubleshoot the issue. First, check the power source and make sure it is working correctly. Then, check the connections and make sure they are secure. If the transformer still does not function, it may be damaged and need to be replaced.