electrical science 202

What does A.C stand for?

• Alternating Current

• Alternating copper

• ohms

• A.C

The si unit for magnetic flux?

• voltage

• angles

• watts

• theta

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

4mm² csa twin cable feeding a motor 150m away. take the resistivity of copper to be 17.2x10⁹ ohm/metre³. find the resistance?

• 0.089 ohms

• 23.45632 ohms

• 1.29 ohms

• 2.2132 ohms

what is the si unit for weight?

• mass

• weight

• newtons

• kilograms

name all 3 effects on electrical current

• heat , chemical , attraction

• thermal,chemical,magnetic

• temperature, chemical ,metallic

• fire , chemical , magnets

what is the si unit for power?

• power

• wats

• watts

• electric

(17.2 x 10^-9 x 200)

(25 x 10^-6 )

• 0.1376

• 1.123

• 0.258

• 2

which is a sine wave

• 
• 
• 
•