Question

A circuit is shown below.If A is an ideal ammeter, B an ideal Battery of voltae V, and C an ideal voltmeter, what will be the $\frac{readingofC}{readingofA}$ ?

• A. R
• B. 2R
• C. $\frac{R}{2}$
• D. 0

Answer 1

The correct option is A R

$rightarrow$ Ideal ammeter has 0 resistance

$rightarrow$ Ideal voltmeter has $\infty$ resistance

Reading of voltmeter = V

Reading of ammeter = $\frac{V}{R}$

$\frac{ReadingofC}{ReadingofA}=\frac{V}{R}R$

= R