Question

Please, answer to the following questions based on the diagram provided.

1)Why is it L/R not LR for the charging and discharging a series RL circuit?

2) In the determination of C in part II, what will you obseve if the voltage probe was connected across decade resistor Rd? Can you determine capacitance from this? (During the experiment we connected voltage probes across capacitor)

3) In the determination of L in Part III, what will you obseve if the voltage probe was connected across terminals of inductor? Can you determine inductance from this? (During the experiment we connected voltage probes across decade resistor)

4) If a sinusoidal signal is used instead of square wave in the function generator, what kind of graph do you expect in the RC circuit and RL circuit?

Link to the lab manual: http://depthome.brooklyn.cuny.edu/physics/lab/phy2/newlabs/Hidden-series-RCL-circuit-ver-1a.pdf (All parts of experiment are there). Thank you a lot!

23 Ω 69 Ω 下 Resistor Capacitor Inductor

Answer 1

1)

for the series arrangement of L and R circuit

the voltage drop crosswise over Resistance = iR

the voltage drop crosswise over inductor = L di / dt

at that point V = i R + L di / dt

V = i + ( L / R ) di / dt

as coefficient of di/dt comes to be L/R, and when tackling this condition L/R stays for what it's worth in charging or

discharging conditions,

hence forth it is L/R and not LR in release/charging of inductor.

2)

in assurance of capacitor,

voltmeter is associated crosswise over capacitor and Vc is estimated.

In the event that voltmeter was associated against the resistor,

we will quantify V - Vc = Vr and from where we can ascertain the capacitance.

3)

in RL circuit,

the voltmeter is associated crosswise over Resistor to gauge V - Vl = Vr.

In the event that we associated it crosswise over inductor small can quantify Vl = V - Vr

and discover inductance structure there.

4)

in sinusoidal information is utilized rather than a square wave ,

then every time the voltage of the sinusoidal diagram transcends the voltage in the circuit,

it will begin charging the circuit and else it will release.

this will fundamentally smoothed out the info sinusoidal chart into a saw tooth shape.

rather than a square wave ,

then every time the voltage of the sinusoidal diagram transcends the voltage in the circuit,

it will begin charging the circuit and else it will release.

this will fundamentally smoothed out the info sinusoidal chart into a saw tooth shape.