Question

PART 1 Three resistors of resistance 10.0 Ω, 15.0 Ω, and 25.0 Ω are connected in...

PART 1

Three resistors of resistance 10.0 Ω, 15.0 Ω, and 25.0 Ω are connected in series. The equivalent resistance of the three resistors is

Group of answer choices

30 Ω

4.84 Ω

40 Ω

50 Ω

PART 2

When several resistors are combined in series the equivalent resistor is

Group of answer choices

greater than the largest resistor

greater than the smallest resistor but less than the largest

sometimes greater and sometimes less than the largest resistor.

less than the smallest resistor

PART 3

The resistivity of copper is 1.72 × 10-8 Ω.m. A copper wire is 200 m long, and the wire diameter is 0.050 cm. The resistance of the wire is

Group of answer choices

27.5 Ω

10.5 Ω

17.5 Ω

7.5 Ω

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