Chapter 22, Problem 89A

To determine

Effect on circuit current.

Answer to Problem 89A

No effect on the current.

Explanation of Solution

Given:

Voltage and resistance is doubled.

Formula Used:

Ohm’s law is given as,

  $V=IR$

Where, $V$ is voltage, $I$ is current and $R$ is resistance.

Calculation:

As voltage is doubled,so, $V\text{'}=2V$

And resistance is also doubled. So, $R\text{'}=2R$

From Ohm’s law,

  $V\text{'}=I\text{'}R\text{'}$

On substituting the given values,

  $\begin{array}{l}2V=I\text{'}\times 2R\\ \Rightarrow I\text{'}=\frac{V}{R}=I\end{array}$

Conclusion:

Therefore, the current in the circuit will remains the same.