If a 100-ohm resistor is connected across 200 volts, what is the current through the resistor?

To determine the current through a resistor when a specific voltage is applied, you can use Ohm's Law, which states that the current (I) is equal to the voltage (V) divided by the resistance (R). The formula is:

I = V / R

In this case, you have a 100-ohm resistor connected across a voltage of 200 volts. Plugging these values into the formula gives:

I = 200 volts / 100 ohms = 2 amperes.

Therefore, the calculation shows that the current flowing through the resistor is 2 amperes. This demonstrates the application of Ohm's Law in a straightforward electrical circuit, confirming that under the given voltage and resistance, the current can be effectively calculated.