# Thinking about circuits graphically

If you are a current student, please Log In for full access to the web site.

Note that this link will take you to an external site (

`https://shimmer.csail.mit.edu`) to authenticate, and then you will be redirected back to this page.

Two networks, N1 and N2, are described graphically in terms of their i-v relations, and connected together through a single resistor, as shown below.

## 1) Thevenin

Determine the Thevenin equivalents of N1 and N2.

**As usual, do not subscript when entering expressions. Enter V_1 as V1, V_2 as V2, I_1 as I1, I_2 as I2.**

####Network N1

V_{TH}= | |

R_{TH}= |

####Network N2

V_{TH}= | |

R_{TH}= |

## 2) Norton

Determine the Norton equivalents of N1 and N2.

####Network N1

I_N= | |

R_N= |

####Network N2

I_N= | |

R_N= |

## 3) Connections

Find the current i_1 that results from the interconnection of N1 and N2.

i_1=

Find the current i_2 that results from the interconnection of N1 and N2.

i_2=