A generator is constructed by rotating a coil of N turns in a magnetic field B a

Question

A generator is constructed by rotating a coil of N turns in a magnetic field B at a frequency f. The internal resistance of the coil is R and the cross sectional area of the coil is A. For each statement select T - True, F - False!

A) The maximum induced EMF occurs when the coil is rotated about an axis parallel to the magnetic field lines.
B) The maximum induced EMF doubles if the frequency f is doubled.
C) The maximum induced EMF doubles if the area A is doubled.
D) The maximum induced EMF occurs when the coil is rotated about an axis normal to the plane of the coil.
E) The maximum induced EMF doubles if the magnetic field B is doubled.
F) The maximum induced EMF doubles if the resistance R is doubled. A generator is constructed by rotating a coil of N turns in a magnetic field B at a frequency f. The internal resistance of the coil is R and the cross sectional area of the coil is A. For each statement select T - True, F - False!

A) The maximum induced EMF occurs when the coil is rotated about an axis parallel to the magnetic field lines.
B) The maximum induced EMF doubles if the frequency f is doubled.
C) The maximum induced EMF doubles if the area A is doubled.
D) The maximum induced EMF occurs when the coil is rotated about an axis normal to the plane of the coil.
E) The maximum induced EMF doubles if the magnetic field B is doubled.
F) The maximum induced EMF doubles if the resistance R is doubled.

Explanation / Answer

1. False. The induced EMF will be cut in half, not doubled.

2. True. You're increasing the area subjected to the magnetic field, so the induced EMF will increase.

3. True. You're increasing the intensity of the magnetic field, thereby increasing the intensity of the induced EMF.

4. True. The additional motion should translate into increased electric energy.

5. False. The frequency is independent of the induced EMF (unless you're approaching zero).

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.