DET10013 RE-CAP CHAPTER 1 PART 1

In a series DC circuit:

• The voltage across each component is the same.

• The current is the same through each component.

• The total resistance is the sum of individual resistances.

• All of the above.

When resistors are connected in parallel in a DC circuit:

• The voltage across each resistor is the same.

• The total resistance is the sum of individual resistances.

• The total current is the sum of individual currents.

• None of the above.

What is the total resistance of two resistors, R1 and R2, connected in series?

• R1 + R2

• R1 * R2

• 1 / (1/R1 + 1/R2)

• R1 - R2

Which type of circuit connection results in the same current passing through each component?

• Series

• Parallel

• Series-parallel

• Delta

What unit is used to measure electrical resistance?

• Ampere (A)

• Volt (V)

• Ohm (Ω)

• Watt (W)

Which of the following is one of the main effects of electric current?

• Generation of heat

• Decrease in resistance

• Reduction in voltage

• Increase in capacitance

If a resistor has a resistance of 8 ohms and a current of 2 amperes flowing through it, what is the voltage across the resistor?

• 4 volts

• 8 volts

• 16 volts

• 0.25 volts

The resistivity of a wire material is 1.7 x 10^-6 ohm-meter. If a wire of this material has a length of 10 meters and a cross-sectional area of 0.002 square meters, what is the resistance of the wire?

• 8.5 ohms

• 85 ohms

• 850 ohms

• 8500 ohms

In a circuit, a voltage of 24 volts is applied across a resistor with a resistance of 12 ohms. What is the current passing through the resistor according to Ohm's Law?

• 0.5 amperes

• 36 amperes

• 2 amperes

• 288 amperes

Which term refers to the ability of cells and batteries to provide electrical energy to a circuit?

• Resistance

• Voltage

• Current

• Quantity of electricity