If you have 10 Ω of resistance and a voltage of 20 V, how much current is going through the circuit?

To determine the current flowing through a circuit when given resistance and voltage, Ohm's Law is applied. Ohm's Law states that the current (I) in a circuit is equal to the voltage (V) divided by the resistance (R). This relationship can be expressed mathematically as:

[ I = \frac{V}{R} ]

In this case, you have a resistance of 10 ohms and a voltage of 20 volts. Plugging these values into the equation gives:

[ I = \frac{20 \text{ V}}{10 \text{ Ω}} = 2 \text{ A} ]

Thus, the current flowing through the circuit is 2 Amperes.

This answer highlights how Ohm's Law serves as a fundamental principle for understanding basic electrical circuits. Mastery of these calculations is essential for anyone in the field of construction and electrical work, as it enables practical application in various scenarios involving voltage, current, and resistance.