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In the following figure, what is the value of the potential at points a and b?

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Express your answer using two significant figures.

## Answer

Potenti als at points a,b,c,d be V_{a}, V_{b}, V_{c}, V_{d} respectively.

The potential at the lower right point which is c is zero that is V_{c} = 0 V

Apply Kirchoff’s loop rule

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**i = 2 A**

Here, *i *is the current through the circuit.

Here, V_{a}– V_{c} = 5V

**V _{a} – 0 = 5V**

**V _{a} = 5V**

The expression for the potential difference between the c and b is

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Thus, potentials at a and b are 5V and -2V respectively

## Last words

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