Yes, and the question wants you to find that missing data. To start, what is the potential difference between P and R?Peter R said:
Ehhh I'm thinking 3V+6V+5V+SRNFuller said:
The two top resistors connect P and R, so the potential difference between P and R must be the sum of the difference across those two resistors.Peter R said:
Right so that leads to 4v on the bottom unknown resistor. Also shouldn't the middle resistor be taking into consideration when calculating the voltage across PR, or you can just ignore it in a question of this kind?NFuller said:
YesPeter R said:
The middle resistor is not dropping any voltage between P and R, so it is ignored at this point.Peter R said:
So what are you supposed to do after finding the 4V drop at the bottom?NFuller said:
You need the difference between Q and S. If you consider P to be at zero volts for simplicity, then it should be obvious what the voltage at Q is and what the voltage at S is.Peter R said:
Electricity is the flow of electric charge through a conductor. It is a form of energy that powers many devices and is essential for modern life.
Electricity can be produced in various ways, including through the use of power plants that burn fossil fuels, nuclear power plants, and renewable sources such as solar, wind, and hydro power.
AC (alternating current) electricity changes direction periodically, while DC (direct current) electricity flows in one direction. AC is used for long-distance power transmission, while DC is used for smaller devices and electronics.
Electricity travels through wires due to the movement of electrons. When a voltage is applied to the wire, the electrons are pushed in one direction, creating a flow of electricity.
When dealing with electricity, it is important to follow safety precautions to prevent electric shock or fire. This includes turning off the power source before working with wires, using insulated tools, and avoiding contact with water when handling electrical devices.
