Unit 201 20 multiple-choice questions LO 1 to LO 5

What is the unit of electrical current?

• Volt

• Ampere

• Ohm

What is the unit of electric charge?

• Volt

• Coulomb

• Ohm

Which particle is primarily responsible for electrical current in a conductor?

• Proton

• Electron

• Neutron

What is the relationship between current (I), voltage (V), and resistance (R) in Ohm’s Law?

• V = I * R

• I = V / R

• R = V / I

What type of current flows in one direction only?

• Alternating Current (AC)

• Direct Current (DC)

• Impulse Current

Which instrument is used to measure electrical current?

(a)  

What is the typical charge of one electron?

• -1.6 x 10^-19 Coulombs

• +1.6 x 10^-19 Coulombs

• 0 Coulombs

What is electrical power measured in?

• Joules

• Coulombs

• Watts

What happens to current if resistance increases while voltage remains constant?

• Current decreases

• Current increases

• Current remains the same

What is the principle of conservation of charge?

• Charge can be created or destroyed

• Total charge in an isolated system remains constant

• Charge can be multiplied