For uniform circular motion at constant speed $v$ in a circle of radius $r$, the centripetal acceleration is:

$\frac{v^2}{r}$, directed radially inward

A wire of length $L$ carrying current $I$ sits in a uniform magnetic field $B$. The force on the wire is greatest when:

The wire is perpendicular to $B$

An electron enters a uniform magnetic field perpendicular to the field. It will:

Travel in a circle at constant speed

Faraday's law states that induced EMF equals:

The rate of change of magnetic flux through the circuit (with a negative sign)

DC motors and AC generators differ structurally mainly in:

The use of a split-ring commutator (motor/DC generator) vs slip rings (AC generator)

Conservation of momentum applies to a closed system means:

No external forces act, so the total momentum vector is constant

The work done by gravity on a satellite in a circular orbit per orbit is:

Zero (gravity is perpendicular to velocity throughout)

Which is the strongest opening for a Module 6 extended response on electromagnetic induction?

Faraday's law of induction underpins modern power generation and transmission, with Lenz's law dictating both the polarity of induced currents and the design of efficient transformers.

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Advanced mechanics and electromagnetism (Modules 5 and 6) quiz

12 questions. Pick an answer and you'll see why right away. Options are shuffled each attempt, and the review at the end links each missed question to the dot point to revise.

For uniform circular motion at constant speed $v$ in a circle of radius $r$ , the centripetal acceleration is:
A projectile launched at $30^\circ$ above horizontal at speed $u$ . Ignoring air resistance, which quantity is constant during flight?
Kepler's third law states $T^2$ is proportional to:
The gravitational field strength at Earth's surface is approximately $9.8$ N/kg. At an altitude equal to Earth's radius above the surface, it is approximately:
A wire of length $L$ carrying current $I$ sits in a uniform magnetic field $B$ . The force on the wire is greatest when:
An electron enters a uniform magnetic field perpendicular to the field. It will:
Faraday's law states that induced EMF equals:
A transformer steps up the voltage from $240$ V to $24{,}000$ V. If the primary has $200$ turns, the secondary has:
DC motors and AC generators differ structurally mainly in:
Conservation of momentum applies to a closed system means:
The work done by gravity on a satellite in a circular orbit per orbit is:
Which is the strongest opening for a Module 6 extended response on electromagnetic induction?