Electrical Science 202

Increasing the length of a conductor will ....

• Decrease the resistance

• Double the resistance

• Half the resistance

• Increase the resistance

What formula is used to calculate Power when you have the values for Current and Voltage ?

• P=I2xV

• P=VxI

• P=V2/I

• P=V2/I2

If 10m of cable is 5 ohms, What is the resistance 80m?

• 50 ohms

• 40 ohms

• 35 ohms

• 100 ohms

what charge do neutrons have in an atom

• neutral

• positive

• negative

• not enough

name all 3 effects on electrical current

• heat , chemical , attraction

• thermal,chemical,magnetic

• temperature, chemical ,metallic

• fire , chemical , magnets

A transformer consists of

• Metal Core

• Metal core and coiled wire

• Metal core and polymer wire

• Polymer core and metal wire

Capacitance in measured in?

• Farads

• Henries

• Volts

• Coulombs

What is the unit of measure for magnetic flux?

• Weber

• Tesla

• Kelvin

• Hertz

What is the induced EMF in a conductor, with a length of 0.25m, moving at a velocity of 5m/s through a magnetic field having a flux density of 1.6 Tesla?

• 6.84v

• 1v

• 2v

• 3.15v

What is the induced EMF in a conductor, with a length of 0.25mm, moving at a velocity of 5m/s through a magnetic field having a flux density of 5 Centi Teslas?

• 62.5µV

• 0.000652v

• 6.25v

• 6.25kV