EDC Final Theory Test

Which one of the following is the main aim of the Workplace Safety & Health Act?

• Ensure the health and safety of employers.

• Ensure the health and safety of employers, employees and general public.

  .

• Protect the health and safety of the employees.

• Protect the health and safety of the general public.

Which of these is the first step to take when conducting a risk assessment?

• Evaluate the risk.

• Identify the hazards.

• Review your findings.

• Update risk assessments.

Which one of the following risk assessment steps is stated in the correct sequence?

• "Hazard identification, risk evaluation and risk control."

• "Hazard identification, risk control and risk evaluation."

• "Risk evaluation, hazard identification and risk control."

• "Risk evaluation, risk control and hazard identification."

The current in a closed circuit is actually the

• resistance to an electron flow.

• rate of flow of electrical charge.

• protons being detached from the atoms.

• electrical pressure exerted in the circuit.

Calculate the unknown voltage drop V₃

• 9V

• 12V

• 24V

• 39V

Calculate the power handled by a 10 kΩ resistor carrying a 1 mA current.

• 0.01 W.

• 0.1 W.

• 1.0 W.

• 10.0 W.

Ten coulombs of charge flow past a given point in a wire in 2 seconds. How many amperes of current are flowing?

• 1.0 A.

• 3.0 A.

• 5.0 A.

• 7.0 A.

A circuit with three resistors connected in parallel has a total resistance of 3 Ω. Two of the resistors are 6 Ω and 12 Ω . Find the value of the third resistor.

• 8 Ω.

• i10 Ω.

• 12 Ω.

• 18 Ω.

Calculate I₁ using Kirchhoff’s Current Law.

• 15 mA

• 20 mA

• 25 mA

• 30 mA

Which one of the following is an advantage of a wire-wound resistor?

• Accurate.

• Small in size.

• Low ohmic values.

• Sensitive to Frequency.