# Calculate the resistance of the section of the circuit R, if the current is 20A, the voltage is 100V?

August 27, 2021 | education

| According to Ohm’s law, the current in a section of the circuit will be directly proportional to the effective voltage and inversely proportional to the resistance of the section of this circuit.

I = U / R, where I is the current strength (I = 20 A), U is the voltage in the circuit (U = 100 V), R is the resistance of the circuit section (Ohm).

Let us express and calculate the resistance of the circuit section:

R = U / I = 100/20 = 5 ohms.

Answer: The resistance of the circuit section is 5 ohms.