Unit 08 Science Mock 1

Charge is a flow of ?

• electrons

• neutrons

• atoms

• protons

The negatively charged part of an atom is called the

• electron

• neutron

• ion

• proton

Which of the following rely upon the chemical effect?

• filament lamp

• alternator

• thermocouple

• electric cell

Which of the following rely upon the heating effect?

• alternator

• thermocouple

• motor

• electroplating

When the current through a conductor increases

• the resistance decreases

• the temperature increases

• the temperature decreases

• the voltage decreases

The symbol shown below represents

• battery

• capacitor

• inductor

• resistor

The SI unit of temperature is degrees

• celcius

• Fahrenheit

• Kelvin

• rankine

The SI unit of volume is

• m²

• cm³

• m³

• m/sec

If the resistivity of copper is 0.0178µΩ/m, the resistance of 50m of 2.5mm² conductor is

• 0.356 Ω

• 0.536 Ω

• 0.178 Ω

• 0.235 Ω

3 12Ω resistors are connected in parallel to a 200V supply, calculate the total power of the circuit.

• 1,111W

• 1,000W

• 400W

• 10,000W