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Mission EC5 Voltage, Resistance and Current Calculations

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Hold down the T key for 3 seconds to activate the audio accessibility mode, at which point you can click the K key to pause and resume audio. Useful for the Check Your Understanding and See Answers.

The Question

A simple circuit consists of a 12-volt battery, an ammeter and a resistor. The ammeter reads 3 amps. Determine the resistance of the resistor and enter in the appropriate space. (Enter your answers to the second decimal place.)
 
(Note: Numerical values are randomly selected and may differ from those shown above.)

Formula Fix

The current (I) in a circuit is dependent upon the electric potential difference (i.e., voltage or∆V) impressed across the circuit and the overall resistance (R) of the circuit. The equation which expresses this relationship is:

I = ∆V / R

A Very Fine Detail

Minds on Physics calculates answers to the fourth decimal place. Your answers do not need to be that accurate. To be safe, enter your answers to the second decimal place (as requested in the question). Avoid the rounding of numerical values which are used in subsequent calculations.

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