26104 Electrical Theory Quiz

According to Kirchhoff's voltage law, the total voltage drop in a circuit is equal to the _____.

• voltage of the power source

• total resistance in the circuit

• current divided by resistance

• total current in the circuit

A circuit diagram shows that the circuit divides into separate branches and there are also series loads. This is a(n) _____.

• series circuit

• parallel circuit

• series-series circuit

• series-parallel circuit

The total voltage in a circuit with voltage drops of 15V, 25V, and 20V is _____.

• 20V

• 60V

• 120V

• 180V

What is the total resistance of three resistors in parallel with values of 2 ohms, 8 ohms, and 14 ohms?

• 1.44 ohms

• 2.24 ohms

• 2.32 ohms

• 2.65 ohms

What is the resistance of a light bulb that uses 15 watts of power when placed across a 15-volt battery?

• 1.5 ohms

• 15 ohms

• 50 ohms

• 150 ohms

The statement that total current entering a point must equal total current leaving that point best describes _____.

• Ohm's law

• Coulomb's total current law

• the Theory of Relativity

• Kirchhoff's current law

The total resistance of four resistors in parallel with values of 3, 10, 25, and 50 ohms is _____.

• 1.66 ohms

• 2.03 ohms

• 2.75 ohms

• 3.33 ohms

The voltage drop across the parallel resistors shown in Figure 1 is _____.

• 17.3 volts

• 20.7 volts

• 62.1 volts

• 100 volts

What is the total resistance of the circuit in Figure 1?

• 15.32 ohms

• 24.17 ohms

• 70.41 ohms

• 120.12 ohms

How many amps of current would flow through the circuit in Figure 2?

• 2.5 amps

   

• 3.24 amps

• 4.14 amps

• 5.21 amps