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Basic Electrical Engineering MCQ

Q:

What is the voltage measured across a series short?

A) Infinite B) Zero
C) The value of the source voltage D) Null
 
Answer & Explanation Answer: B) Zero

Explanation: A short is just a wire. The potential difference between two points of a wire is zero hence the voltage measured is equal to zero.

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123
Q:

Many resistors connected in series will?

A) Divide the voltage proportionally among all the resistors B) Divide the current proportionally
C) Increase the source voltage in proportion to the values of the resistors D) Reduce the power to zero
 
Answer & Explanation Answer: A) Divide the voltage proportionally among all the resistors

Explanation: In a series circuit, the current remains the same across all resistors hence the voltage divides proportionally among all resistors.

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222
Q:

A voltage across a series resistor circuit is proportional to?

A) The amount of time the circuit was on for B) The value of the resistance itself
C) The value of the other resistances in the circuit D) The power in the circuit
 
Answer & Explanation Answer: B) The value of the resistance itself

Explanation: V=IR hence the voltage across a series resistor circuit is proportional to the value of the resistance.

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