Find the potential difference between $A$ and $B$

70 V

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60 V

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40 V

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30 V

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Solution

The correct option is A $70 V$
Applying Kirchhoff's Voltage law, from $A$ to $B$ ,
$V_{A} - 15 - 5 (2) - 10 - 5 (6) - 5 = V_{B}$
$\Rightarrow V_{A} - V_{B} = 70 V$

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Find the potential difference between A and B

The correct option is A 70 VApplying Kirchhoff's Voltage law, from A to B, VA−15−5(2)−10−5(6)−5=VB ⇒VA−VB=70 V

Find the potential difference between $A$ and $B$

The correct option is A $70 V$
Applying Kirchhoff's Voltage law, from $A$ to $B$ ,
$V_{A} - 15 - 5 (2) - 10 - 5 (6) - 5 = V_{B}$
$\Rightarrow V_{A} - V_{B} = 70 V$