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Q.

Is it true that the effective voltage of the below circuit is $8 V$ ?

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a

True

b

False

answer is B.

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Detailed Solution

The above given statement is false.
In a series circuit, all components are connected end-to-end, forming a single path for current flow. From the given circuit, we can understand that the connection is in series. Thus the current through the resistors are the same while voltage across them is different.
Let

R_{1} = 5 Ω

and

R_{} =

unknown resistor
Let the voltage across

5 Ω

resistor is

V_{1}

and the voltage across

R Ω

resistor is

V_{2}

It is given

V_{1} = 10 V

V_{2} = 6 V

Since the connection is in parallel the effective voltage is the sum total of the voltage across each resistor given.
Here the effective voltage will be the sum of the voltage drop across

R_{1}

and

R

Thus

V = V_{1} + V_{2}

= > V = 10 + 6

= > V = 16

Thus the effective voltage of the given circuit is

16 V

.

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