NESC Course 02001 parallel, Edison 3 wire , ohms law exam

In a series circuit, if the total voltage supplied is 12V and the resistance is 6 ohms, what is the current flowing through the circuit?

• 2A

• 0.5A

• 12A

• 4A

What happens to the total resistance in a series circuit if another resistor is added?

• It remains the same.

• It increase.

• It decreases

• It is increase by 2x

In a series circuit with three resistors (R1, R2, and R3), if the total resistance is 30 ohms, and R1 is 10 ohms, what is the combined resistance of R2 and R3?

• 20 ohms

• 40 ohms

• 10 ohms

• 30 ohms

If the voltage is doubled while the resistance remains constant, what happens to the power?

• It doubles

• It increases by four times

• It remains the same

• It decreases

What is a primary effect of a broken neutral in an Edison 3-wire system?

• 
  Reduced overall power consumption

• Overvoltage on one phase and undervoltage on the other phase

• Nothing happens

• The loads will not work

If two resistors, R1 = 4Ω and R2 = 6Ω, are connected in parallel, what is the total resistance?

• 2.4Ω

• 10Ω

• 24Ω

• 1.5Ω

In a circuit where the voltage is 24 volts and the current is 6 amperes, what is the resistance?

• 4Ω

• 144Ω

• 3.8Ω

• 0.25Ω

If an object has a mass of 10 kg, what is its weight on Earth (approximately 9.8 m/s²)?

• 0.98 N

• 98 N

• 9.8N

• 198 N

What is the main characteristic of a parallel circuit?

• 
  Voltage is the same across all components

• Current is the same

• It has voltage drop between the loads

• Resistance is the same

If you increase the voltage in a circuit while keeping the resistance constant, what happens to the current?

• It increases

• It remains the same

• it decreases

• nothing happens