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Consider Ohm's Law and the relationship between the variables. In an electric circuit, what factors affect the current (amperage)? (select two)

V
Voltage
Current
R
Resistance
(2 points)

If the circuit's resistance is increased the current will decrease.

If the circuit's voltage is increased the current will increase.

If the circuit's resistance is increased the current will increase.

If the circuit's voltage is increased the current will decrease.

1 answer

In an electric circuit, according to Ohm's Law (V = IR), the factors that affect the current (amperage) are:

  1. Voltage (V)
  2. Resistance (R)

From the multiple-choice statements, the correct implications of changing these factors are:

  • If the circuit's resistance is increased, the current will decrease. (This is true because increasing resistance while keeping voltage constant leads to a reduction in current.)

  • If the circuit's voltage is increased, the current will increase. (This is also true because increasing voltage while keeping resistance constant leads to an increase in current.)

The other two statements are incorrect:

  • If the circuit's resistance is increased, the current will increase. (This is false; current decreases with increased resistance.)

  • If the circuit's voltage is increased, the current will decrease. (This is false; current increases with increased voltage.)

So the two key factors affecting current are Voltage and Resistance, and the corresponding true statements are the first two listed above.