NOCTI - Electricity

Using Ohm's Law, calculate the current flowing through a resistor of 10 ohms when a voltage of 20 volts is applied across it.

• 0.5 A

• 2 A

• 5 A

• 10 A

In a series circuit with three resistors of 5 ohms, 10 ohms, and 15 ohms, what is the total resistance?

• 10 ohms

• 15 ohms

• 30 ohms

• 5 ohms

Calculate the power consumed by a device that draws 3 A of current with a voltage supply of 12 V.

• 36 W

• 4 W

• 15 W

• 9 W

In a parallel circuit, if one branch has a resistance of 4 ohms and another branch has a resistance of 6 ohms, what is the total resistance?

• 10 ohms

• 2.4 ohms

• 5 ohms

• 1.5 ohms

• Voltage

• Current

• Resistance

• Power

If a circuit has a total power of 60 W and operates at a voltage of 12 V, what is the total current flowing through the circuit?

• 5 A

• 10 A

• 7.2 A

• 0.2 A

What is the unit of electrical power?

• Volt

• Ampere

• Ohm

• Watt

In a circuit, if the voltage is doubled and the resistance remains constant, what happens to the current?

• It remains the same

• It is halved

• It is doubled

• It is quadrupled