4.1c Series and Parallel Circuits

A battery of e.m.f. 12 V and internal resistance 1.5 Ω was connected to a 4.5 Ω resistor, what is the value for current?

• 4A

• 6A

• 2A

• 8A

A battery of e.m.f. 12.0 V, with an internal resistance of 3.0 Ω, is connected in series with a 15.0 Ω resistor and a battery of e.m.f. 9.0 V, which has an internal resistance of 2.0 Ω. Calculate the p.d. of the 15Ω resistor.

• 15.75V

• 5.25V

• 15.25V

• 15.50V

Internal resistance can be measured directly

• True

• False

• Sometimes

Internal resistance can be calculated from measurements

• True

• False

An ideal voltmeter in engineering has...

• ...an easily readable scale

• ...an infinite resistance

• ...zero resistance

• ...a negligible internal resistance

In engineering, an ideal ammeter has...

• ...a 10A fuse

• ...infinite resistance

• ...an autoranging function

• ...zero resistance

What is the total resistance of this circuit

• .18Ω

• 5.45Ω

• 60Ω

• 6000Ω

What is the total resistance of the circuit?

• 100Ω

• 200Ω

• .063Ω

• 15.8Ω

What is in series?

• R₁ & R₂

• R₃ & R₄

• R₁, R₂, & R₃

• R₁, R₂, R₃, & R₄

What is in parallel?

• R1 & R2

• R3 & R4

• R1, R2, & R3

• R1, R2, R3, & R4