ABYC Marine Electrical Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the ABYC Marine Electrical Test with our comprehensive quiz. Study with flashcards and multiple-choice questions. Detailed explanations and tips included. Ace your exam!

Practice this question and more.

What happens to the current if you increase the voltage while keeping the load constant?

It decreases
It increases
It stays the same
It fluctuates

The correct answer is: It increases

When voltage is increased while keeping the load constant, the current will increase. This relationship is governed by Ohm's Law, which states that current (I) is equal to the voltage (V) divided by the resistance (R) of the load (I = V/R). If the resistance remains unchanged (which it does when the load is constant), an increase in voltage directly leads to an increase in current. For example, if a load has a resistance of 10 ohms and the voltage is increased from 10 volts to 20 volts, the current will change from 1 ampere (10V/10Ω) to 2 amperes (20V/10Ω). This illustrates the direct proportionality between voltage and current when resistance remains constant. Thus, responding to an increased voltage results in a proportional increase in current.