Doc Al said:
You're told it is 50kΩ. (That's separate to the resistor of the same value in the circuit.)ImpCat said:
NascentOxygen said:
To calculate the current in an electric circuit, you need to use Ohm's Law which states that current (I) is equal to the voltage (V) divided by the resistance (R). This can be represented by the equation I = V/R.
The unit of measurement for electric current is the ampere (A), which is defined as the flow of one coulomb of charge per second.
The number of components in a circuit does not affect the current, as long as the circuit is in series. In a series circuit, the current is the same at all points. However, in a parallel circuit, the current is divided among the branches based on the resistance of each branch.
AC (alternating current) and DC (direct current) are two types of current that flow through electric circuits. AC current changes direction periodically, while DC current only flows in one direction. Most household appliances and electronics use AC current, while batteries and portable devices use DC current.
Resistance is a measure of how difficult it is for current to flow through a circuit. The higher the resistance, the lower the current will be, and vice versa. This is because resistance decreases the flow of electrons, thus reducing the amount of current in the circuit.