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Circuits 1: ∆V = I•R

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Assignment Overview

Use ∆V = I•R to solve the following problems.

 1. EC3Q1
Points: 0/1

A power saw at the local hardware store boasts of having a 15.9-Amp motor. Determine its resistance when plugged into a 110-Volt outlet.

  1. Resistance

    Ohms

    Attempts: 0
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 2. EC3Q2
Points: 0/1

A coffee cup immersion heater utilizes a heating coil with a resistance of 7.38 Ω. Determine the current through the coil when operated at 120 Volts.

  1. Current

    Amps

    Attempts: 0
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 3. EC3Q7
Points: 0/1

An electric motor draws 3.84 Amps of current when connected to a voltage source. A quick measurement indicates that it has a resistance of 25.2 Ω, Determine the voltage of the voltage source.

  1. Voltage

    Volts

    Attempts: 0
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 4. EC3Q3
Points: 0/1

A typical color television draws about 3.43 Amps when connected to a 120-Volt source. What is the effective resistance of the TV set?

  1. Resistance

    Ohms

    Attempts: 0
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 5. EC3Q6
Points: 0/1

The headlight on a car has a resistance of 24.5 Ω and is powered by a 12-Volt battery. Calculate the current in the headlight.

  1. Current

    Amps

    Attempts: 0
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