Question

part 1

A 48 volt battery (DC) is connected in series to a 10 milli-henrie inductor, and a 3 ohm resistor. What is the current in the circuit, in amps, after 2.1 milli-seconds?

part 2

A 29 milli-henrie inductor and a 3 ohm resistor are connected without a battery. The initial current in the circuit is 10 amps. How long does it take, in milli-seconds, for the current to be 3.7 amps?

Answer #1

A battery (DC battery) is connected in series to a 13
milli-henrie inductor and a 6 Ohm resistor. After 6 milli-seconds,
the battery is disconnected. 3 milli-seconds after the battery has
been disconnected, the current in the circuit is 2.3 amps. What was
the voltage of the battery that was disconnected in volts?

4) A battery (DC battery) is connected in series to a 14
milli-henrie inductor and a 4 Ohm resistor. After 6 milli-seconds,
the battery is disconnected. 5 milli-seconds after the battery has
been disconnected, the current in the circuit is 3.8 amps. What was
the voltage of the battery that was disconnected in volts?

part A
A solenoid with 44 x 103 turns per meter, a cross sectional
radius of 0.5 m, and a length of 0.2 meters is used as to form an
inductor. Then a 8 x 103 volt battery (DC) is connected in series
to this inductor, a resistor of 2 kilo-Ohms, and another resistor
of 8 kilo-Ohms. After 14 milli-seconds, what is the power output of
the battery in kilo-watts?
part Aa.
A battery (DC battery) is connected in series...

A 2.4 Henry inductor is connected in series with a 12.0 Volt
direct current battery, a 6.0 Ohm resistor, and a switch. The
switch is open so no current is flowing in the circuit. Explain
what happens to the current once the switch is closed.
Intelligently use "Faraday's law" and "Lenz's law" and "time
constant" in your explanation. Describe what a graph of current
versus time would look like, what it's value would be at time = 0,
and what...

A series RL circuit consists of a 6.3 volt battery, a 175 ohm
resistor and an inductor.
(a) If the battery has been connected for a long time interval,
what is the current in the circuit?
(b) The battery is then removed from the circuit, so only the
resistor and the inductor are connected in series. What is the
inductance of the inductor if the current drops to half of its peak
value in 2.00 ms?
(c) The current is...

10) A resistor is connected to a capacitor of 3 micro-farads
without a battery. The initial charge of capacitor is 100
micro-coulombs. After 12 milli-seconds, the charge in the capacitor
is 37 micro-coulombs. What is the current in the circuit, in
milli-amps, at one time constant? Hint: find the value of the
resistor first.

A resistor of 10 kilo-ohms is connected in series to a capacitor
which are connected to a 10 volt battery. After some time, the
charge in the capacitor is 10 micro-coulombs. At that time, the
battery is disconnected and 5 milli-seconds after the battery has
been disconnected, the charge in the capacitor is 3.7
micro-coulombs. What is the voltage across the resistor 1.9
milli-seconds after the battery has been disconnected in volts?

A 65 ohm resistor is connected in series to a 7.36 mH inductor,
an open switch, and a 27 volt battery. After the switch is closed,
how long will it take for the current in the inductor to reach 109
mA? Express your answer in milliseconds.

A long solenoid is used as an inductor in an R-L circuit. The
solenoid has 165/m and a cross-sectional radius of 0.14 meters. It
is placed into a R-L circuit with a 18 Ohm resistor and a battery
initially. The battery is removed, the initial current is 3 amps,
and 8 milli-seconds after the battery has been removed, the voltage
across the inductor is 7 volts. What is the length of the solenoid
in meters?

A resistor of 8 kilo-ohms is connected in series to a capacitor
which are connected to a 6 volt battery. After some time, the
charge in the capacitor is 10 micro-coulombs. At that time, the
battery is disconnected and 7 milli-seconds after the battery has
been disconnected, the charge in the capacitor is 3.7
micro-coulombs. What is the voltage across the resistor 2.8
milli-seconds after the battery has been disconnected in volts?

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