Question 1 of 10
What is the primary unit of measurement for electrical resistance?
Resistance is measured in Ohms, named after Georg Simon Ohm.
Question 2 of 10
Which formula correctly represents Ohm's Law?
Ohm's Law states that Resistance (R) is equal to Voltage (V) divided by Current (I).
Question 3 of 10
If a circuit has a voltage of 24V and a current of 6A, what is the resistance?
Using Ohm's Law (R=V/I), R = 24V / 6A = 4 Ohms.
Question 4 of 10
What does an ohmmeter measure?
An ohmmeter is specifically designed to measure electrical resistance.
Question 5 of 10
How is resistance affected by the type of material?
Different materials have different inherent resistance properties (resistivity).
Question 6 of 10
Which of the following is NOT a factor that influences resistance?
The color of the wire does not directly affect its resistance.
Question 7 of 10
In an AC resistive circuit, how is resistance (R) calculated in terms of impedance (Z) and reactance (X)?
In an AC resistive circuit, R = ?(Z² - X²).
Question 8 of 10
What is the formula for calculating resistance (R) given power (P) and current (I)?
R = P / I²
Question 9 of 10
If a circuit has a power factor of 0.8 and an impedance of 10 Ohms, what is the resistance?
Resistance = Power Factor * Impedance. R = 0.8 * 10 = 8 Ohms.
Question 10 of 10
What does resistance do to the flow of current?
Resistance opposes the flow of current in a circuit.
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