LENZ LAW

Front

What does Lenz's Law state?

Back

Lenz's law states that an induced current or emf always tends to oppose or cancel out the change that causes it.

Front

Who deduced Lenz's Law and in what year?

Back

Lenz's Law was deduced in 1834 by the Russian physicist Heinrich Friedrich Emil Lenz.

Front

What is the main difference between Alternating Current (AC) and Direct Current (DC)?

Back

The main difference is that DC is unidirectional current while AC is bidirectional current.

Front

What is an LC circuit?

Back

An LC circuit is a closed loop consisting of an inductor and a capacitor.

Front

What happens to the current in an LC circuit when the capacitor discharges?

Back

The current cannot change instantaneously; it starts at zero and builds up to a maximum value.

Front

What is the characteristic frequency of an LC circuit?

Back

The characteristic frequency is the frequency at which large amplitudes are built up when a driving force is applied at that frequency.

Front

What is the formula for the frequency of oscillation in an LC circuit?

Back

f = 1 / (2π√(LC)) where L is inductance and C is capacitance.

Front

What is the relationship between the direction of induced current and the change in magnetic flux according to Lenz's Law?

Back

The induced current sets up a magnetic field that opposes the change in flux.

Front

What is the significance of the right-hand rule in determining the direction of induced current?

Back

The right-hand rule helps determine the direction of the magnetic field produced by a circular loop.

Front

What is the effect of resistance on induced current in a circuit?

Back

The greater the circuit resistance, the less the induced current that appears to oppose any change in flux.