5
QuizMultiple Choice

Electromagnetism — Unit test

Question 5 • Lollar_8Science_Q1_25-26_RC

Liang is working with an electrical circuit. She replaces a straight electrical wire with a coiled wire.

Answer
A
increase the strength of the magnetic field when current flows through the circuit
B
decrease the strength of the magnetic field when current flows through the circuit
C
increase the current that flows through the wire when the circuit is active
D
decrease the current that flows through the wire when the circuit is active

Explanation

A coiled wire makes the magnetic fields from its loops add together, producing a stronger magnetic field than a straight wire when current flows. So replacing the straight wire with a coil increases the field’s strength; it does not necessarily increase the current.

AI-written and checked against the verified answer.

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