How do you find the power across a voltage source?
The power delivered by the voltage source is: PV = – I * V = – 5 * 10-2 *150 = -7.5 W. Note that the current is opposite to the voltage in the source. By convention in this case, power is denoted as a negative quantity.
What is the source of power or current in a circuit?
A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it. A current source is the dual of a voltage source….Background.
| Voltage source | Current source |
| Battery of cells | Single cell |
Can a current be dependent on a voltage?
For example, a current source could be dependent on a voltage while a voltage source could be dependent on a current. It’s just a mathematical representation. It will cause some things that look odd at first, like 0.5v 1 amps, but it’s perfectly natural.
When to look for a dependent power source?
When working with dependent power sources, you need to look for the dependent element, or the element that the power source is dependent upon. Make sure that you pay attention to whether it’s dependent on the voltage or the current. When solving the circuit, you can just place the provided relationship into the equation you laid out.
How to calculate the power supplied by the current and voltage?
for the current source : the voltage is 12V (the same of the voltage source, because they are in parallel). The power is 6A * 12V = 72W. or the voltage source : you have first to calculate the current flowing in the source, which is the difference between the current in the resistor and the current of the current source.
When does a power source depend on a current?
On occasion, such as with a current mirror, a power source in real life depends on the voltage or current in another portion of the circuit. This is modeled with dependent power sources. They complicate circuit analysis but they shouldn’t be too scary as they simply replace one bit of math with another.