Multiple Choice

The equivalent unit for an ohm is a ________.

1. V/A
2. C/m
3. $$\frac{\text{A}}{\text{V}}$$
4. V/s

What does the circuit element shown represent?

1. a battery
2. a capacitor
3. the ground
4. a switch

How many 10-Ω resistors must be connected in series to make an equivalent resistance of 80 Ω?

1. 80
2. 8
3. 20
4. 40

Which two circuit elements are represented in the circuit diagram?

1. a battery connected in series with an inductor
2. a capacitor connected in series with a resistor
3. a resistor connected in series with a battery
4. an inductor connected in series with a resistor

How much current will flow through a 10-V battery with a 100-Ω resistor connected across its terminals?

1. 0.1 A
2. 1.0 A
3. 0
4. 1,000 A

A 10-Ω resistor is connected in parallel to another resistor R . The equivalent resistance of the pair is 8 Ω. What is the resistance R?

1. 10 Ω
2. 20 Ω
3. 30 Ω
4. 40 Ω

Are the resistors shown connected in parallel or in series? Explain.

1. The resistors are connected in parallel because the same current flows through all three resistors.
2. The resistors are connected in parallel because different current flows through all three resistors.
3. The resistors are connected in series because the same current flows through all three resistors.
4. The resistors are connected in series because different current flows through all three resistors.

What power is dissipated in a circuit through which 0.12 A flows across a potential drop of 3.0 V?

1. 0.36 W
2. 0.011 W
3. 5 V
4. 2.5 W