Question

The circuit diagram below shows a $9.0V$ battery in a circuit with three resistors, labeled $1,2$ and $3$.
What is the voltage drop across resistor $3$?

• A. $3.0V$
• B. $9.0V$
• C. $27.0V$
• D. $81.0V$
• E. It is impossible to determined the voltage drop without knowing the resistance value

Answer 1

The correct option is B $9.0V$

As there is no other resistors in circuit besides these three resistors therefore total voltage of battery will be dropped across them , now $R_1,R_2$ and $R_3$ are in parallel combination therefore voltage drop across them will be same that is ,

$V=9.0V$ (voltage drop across $R_3$)