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.
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