10th Grade Final Exam

A type of subatomic particle with a positive charge is a(n) _____.

• neutron

• nucleus

• proton

• electron

An electrical circuit contains, at minimum, a(n) _____.

• voltage source, load, and conductors

• voltage source, load, and overcurrent device

• ammeter, load, and voltage source

• resistor, conductors, and load

Another term used for voltage is _____.

• current

• emf

• joule

• coulomb

Which of the following substances is considered an insulator?

• Copper

• Porcelain

• Silver

• Gold

Joules are _____.

• the difference between voltage and current

• the potential difference between two points

• units of work

• the rate of current flow

Current is measured in units called _____.

• amperes

• volts

• watts

• joules

In a parallel circuit, the total resistance is _____.

• proportional to the smallest resistance

• less than the smallest resistance

• greater than the smallest resistance

• equal to the smallest resistance

Resistance is measured in _____.

To calculate the current flowing in a circuit, you must _____.

•  divide voltage by resistance (E/R)

• multiply voltage by resistance (E × R)

• divide resistance by power (R/P)

•  multiply power by resistance (P × R)

An ammeter is used to measure _____.