Fractions and Transposition Quiz

What does the symbol % mean?

• Out of 10

• Out of 100

• Out of 1000

• Out of 1

What is the numerator in the fraction 3/8?

• 3

• 8

• 11

• 5

What is the result of adding 5/6 + 1/6?

• 6/6

• 5/5

• 6/5

• 5/6

What is the maximum permitted voltage drop in a lighting circuit if the supply voltage is 230 volts and the drop is 3%?

• 6.9 volts

• 3.0 volts

• 9.2 volts

• 5.5 volts

In the formula I = V/R, what does 'I' represent?

• Voltage in volts

• Resistance in ohms

• Current in amperes

• Power in watts

What is the formula used to calculate the current flowing in a circuit?

• I = V + R

• I = V/R

• I = R/V

• I = V × R

What is the first step in making 'R' the subject of the formula I = V/R?

• Multiply both sides by R

• Divide both sides by V

• Add V to both sides

• Subtract I from both sides

What is the formula used in examples 1 and 2 known as?

• Ohm’s law

• Newton’s law

• Kirchhoff’s law

• Coulomb’s law

What is the result of multiplying both sides of I = V/R by R?

• I × R = V

• I = V × R

• I = R/V

• I = V + R

What is the next step after multiplying both sides by R in the formula I = V/R to make R the subject?

• Divide both sides by I

• Add I to both sides

• Subtract V from both sides

• Multiply both sides by V