CPE10082 Electrical and Electronics Topic 1

What is the unit of voltage?

• Ohm

• Volt

• Coulomb

• Ampere

Which of the following describes electrical current?

• Resistance to flow

• Energy stored

• Potential difference

• Flow of electrons

What is the primary function of a resistor in a circuit?

• To limit current

• To convert energy

• To increase voltage

• To store energy

What is the basic unit of electrical resistance?

• Ampere

• Coulomb

• Volt

• Ohm

What does a voltmeter measure?

• Current

• Resistance

• Voltage

• Power

What is the role of free electrons in a conductor?

• To create voltage

• To store energy

• To carry charge

• To resist flow

What is the definition of electrical charge?

• Flow of electrons

• Potential difference

• Excess or deficiency of electrons

• Resistance to flow

Which of the following materials is a good conductor of electricity?

• Rubber

• Glass

• Copper

• Wood

What happens to the resistance in a circuit when more resistors are added in series?

• It becomes zero

• It increases

• It remains the same

• It decreases

What is the formula for calculating voltage?

• V = I * R

• V = I - R

• V = I + R

• V = R / I