Q4 REVIEWER GENPHYSICS 2

What is induced emf?

• The voltage generated by a stationary magnetic field

• The voltage generated by a changing magnetic field

• The voltage generated by a constant electric field

• The voltage generated by a moving electric field

According to Faraday's Law, the magnitude of the induced emf depends on:

• The mass of the conductor

• The rate of change of magnetic flux

• The color of the conductor

• The temperature of the magnet

Which of the following increases the magnitude of the induced current?

• Increasing the resistance of the circuit

• Decreasing the number of turns in the coil

• Increasing the strength of the magnetic field

• Keeping the magnetic flux constant

The direction of the induced current is determined by:

• Faraday's Law only

• Ohm's Law

• Lenz's Law

• Newton's Third Law

Which action would not increase the induced emf in a coil?

• Moving the magnet faster

• Increasing the number of turns in the coil

• Using a weaker magnetic field

• Rotating the coil more quickly

If the magnetic flux through a loop is constant, the induced emf is:

• Maximum

• Zero

• Increasing

• Negative

Which law quantitatively describes the induced emf in a coil due to a change in magnetic flux?

• Ohm's Law

• Faraday's Law

• Coulomb's Law

• Ampere's Law

What is the term for the total magnetic field lines passing through a given area?

• Magnetic flux

• Magnetic density

• Magnetic intensity

• Magnetic potential

Faraday's Law states that the induced EMF is proportional to which rate?

• Area of the conductor

• Length of the conductor

• Temperature of the conductor

• Rate of change of magnetic flux

Total internal reflection occurs when light travels:

• From a denser to a rarer medium

• From a rarer to a denser medium

• In a vacuum

• Through a transparent medium only