10th Grade Electricity Comprehensive Quiz

What is the fundamental definition of electrical current?

• Movement of protons through a circuit
• Flow of electric charge in a circuit
• Accumulation of static electricity
• Resistance of electrical components

In the equation I = Q/t, what does 'Q' represent?

• Quantity of resistance
• Quality of current
• Total charge
• Time interval

Which device measures electrical current in a circuit?

• Voltmeter
• Ammeter
• Ohmmeter
• Multimeter

Conventional current is defined as the flow of what?

• Electrons
• Positive charge
• Neutrons
• Ions

In metals, electrical current is primarily due to the movement of what?

• Protons
• Neutrons
• Electrons
• Ions

What unit measures potential difference?

• Amperes
• Watts
• Volts
• Ohms

Which statement best describes Ohm's Law?

• V = I × R
• I = V ÷ R
• R = V ÷ I
• All of the above

A thermistor's resistance does what as temperature increases?

• Increases
• Decreases
• Remains constant
• Becomes zero

In a series circuit, what happens to current?

• Varies in each component
• Remains the same in each component
• Becomes zero
• Splits between components

What is the primary purpose of a fuse in an electrical circuit?

• Increase current
• Decrease resistance
• Protect against excessive current
• Generate heat