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?