Upper Sec_Electrical resistance

What is the SI unit of resistance?

• D) Coulomb

• B) Ohm

• C) Volt

• A) Ampere

Which component of a circuit resists the flow of electricity?

What is the formula for resistance?

• A) R = V/I

• B) R = I/V

• C) R = V + I

• D) R = V * I

What happens to the current when the resistance increases?

• A) Increases

• B) Decreases

• C) Remains the same

• D) Becomes zero

Which factor affects resistance by causing higher resistance in a wire?

• D) Thinner diameter

• C) Shorter length

• B) Thicker diameter

• A) Longer length

What type of conductors obey Ohm's law?

• A) Non-ohmic conductors

• B) Metallic conductors

• D) Insulators

• C) Superconductors

What does the graph of an ohmic conductor look like?

• A) A straight line passing through the origin (0,0)

• C) A horizontal line

• D) A vertical line

• B) A slanted line

What type of conductors do not obey Ohm's law?

• D) Non-ohmic conductors

• C) Insulators

• B) Superconductors

• A) Metallic conductors

What is the relationship between cross-sectional area and resistance?

• C) No relationship

• B) Direct relationship

• D) Exponential relationship

• A) Inverse relationship

How can the resistance of a metallic conductor be determined?

• A) Using a voltmeter

• B) Using an ammeter

• C) Using a rheostat

• D) Using a combination of voltmeter and ammeter