In $($Figure $1),$ suppose that $E=56\mathrm{.}0V,R=250\mathrm{.}0$ and $L=0\mathrm{.}170H.$ With switch $S_2$ open, switch $S_1$ is left closed until a constant current is established. Then $S_2$ is closed and $S_1$ opened, taking the battery out of the circuit.

What is the initial current in the resistor, just after $S_2$ is closed and $S_1$ is opened? Express your answer in amperes.

In $($Figure $1),$ suppose that $E=56\mathrm{.}0V,R=250\mathrm{.}0$ and $L=0\mathrm{.}170H$ With switch $S_2$ open, switch $S_1$ is left closed until a constant current is established. Then $S_2$ is closed and $S_1$ opened, taking the battery out of the circuit.

Figure

$1$ of $1$

$I=$

A

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Part B

What is the current in the resistor at $t=4\mathrm{.}20{10}^{-4}s?$

Express your answer in amperes.

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Part C

What is the potential difference between points $b$ and $c$ at $t=4\mathrm{.}20{10}^{-4}s?$

Express your answer in volts.

$V=$

V

Consider the circuit shown in $($Figure $1).$ Let ${?}_E=36\mathrm{.}0V,R_0=50\mathrm{.}0,R=150,$ and $L=4\mathrm{.}00H$

Switch $S_1$ is closed and switch $S_2$ is left open. Just after $S_1$ is closed, what is the current $i_0$ through $R_0$ Express your answer in amperes.

A

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Part B

Switch $S_1$ is closed and switch $S_2$ is left open. Just after $S_1$ is closed, what is the potential difference $V_{ac}$ Express your answer in volts.

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Part C

Switch $S_1$ is closed and switch $S_2$ is left open. Just after $S_1$ is closed, what is the potential difference $V_{cb}$ Express your answer in volts.

Express your answer in volts.