Answer ALL questions. Look for any feedback given if you get an answer incorrect. Keep choosing an answer until you get it correct. CORRECT or INCORRECT answers are indicated at the TOP of the page. A score is given at the TOP of the page when the exercise has been completed.

What is signified by the letter 'R' in the following equation?

total resistance

total resistivity

total reactance

total reluctance

What is signified by the GREEK letter 'RHO' in the following equation?

resistance

resistivity

reactance

reluctance

Which material has the HIGHEST resistivity value from the following choices?

aluminium

steel

copper

silver

Which material has the LOWEST resistivity value from the following choices?

aluminium

copper

steel

Brass

Calculate the total resistance (rounded up value) from the following information -

1.17 ohms

11.7 ohms

0.117 ohms

111.7 ohms

Which one of the following materials has a 'negative temperature coefficient' ?

copper

silver

iron

carbon

Which one of the following 'number conversions' is correct?