E&M Review

Two resistors (R1= 2 Ω and R2= 4 Ω) are in series in a circuit. The current . . .

• is larger for R2 than R1.

• is smaller for R2 than R1.

• is the same for both R2 and R1.

• There is not enough information to say.

Tags

NGSS.HS-PS3-5

Two resistors (R1= 2 Ω and R2= 4 Ω) are in parallel in a circuit. The current . . .

• is larger for R2 than R1.

• is smaller for R2 than R1.

• is the same for both R2 and R1.

• There is not enough information to say.

Two resistors (R1= 2 Ω and R2= 4 Ω) are in series in a circuit. The voltage across the resistors . . .

• is larger for R2 than R1.

• is smaller for R2 than R1.

• is the same for both R2 and R1.

• There is not enough information to say.

Two resistors (R1= 2 Ω and R2= 4 Ω) are in parallel in a circuit. The voltage across the resistors . . .

• is larger for R2 than R1.

• is smaller for R2 than R1.

• is the same for both R2 and R1.

• There is not enough information to say.

Two resistors (R1= 2 Ω and R2= 4 Ω) are in series in a circuit. A third resistor (R3= 8 Ω ) is added in series. The equivalent (total) resistance . . .

• increases.

• stays the same.

• decreases.

• There is not enough information to say.

Two resistors (R1= 2 Ω and R2= 4 Ω) are in parallel in a circuit. A third resistor (R3= 8 Ω ) is added in parallel. The equivalent (total) resistance . . .

• increases.

• stays the same.

• decreases.

• There is not enough information to say.

The electric current as a function of voltage of a wire is presented by the graph. What is the power dissipated in the resistor when the applied voltage is 5 V?

• 5 W

• 10 W

• 15 W

• 20 W

An ammeter connected in series with three resistors reads an electric current of 2 A. What is the electric current flowing trough resistor R3?

• 1 A

• 2 A

• 3 A

• 4 A

Three resistors: R1 = 3 Ω,R2 = 6 Ω, and R3 = 9 Ω

are connected in series to each other and to a

36 V battery. What is the ammeter reading

after the switch is closed?

• 8 A

• 6 A

• 4 A

• 2 A

Which circuit has greater resistance between the terminals?

• A

• B

• C

• D