A potential divider is used to give outputs of 4, V and 8, V from a 12, V source. Which combination of resistances, (R_1, R

Q: A potential divider is used to give outputs of $4\, V$ and $8\, V$ from a $12\, V$ source. Which combination of resistances, $(R_1, R_2, R_3)$ gives the correct voltages ? $R_1 : R_2 : R_3$

b (b) Resistors are connected in series. So current through each resistor will be same $ \Rightarrow i = \frac{{12 - 8}}{{{R_3}}} = \frac{{8 - 4}}{{{R_2}}} = \frac{{4 - 0}}{{{R_1}}}$ $ \Rightarrow \frac{4}{{{R_3}}} = \frac{4}{{{R_2}}} = \frac{4}{{{R_1}}}$ So, ${R_1}:{R_2}:{R_3}::\;1:1:1$.

SECTION - A [PHYSICS MCQ]

GSEB - English Medium

A potential divider is used to give outputs of $4\, V$ and $8\, V$ from a $12\, V$ source. Which combination of resistances, $(R_1, R_2, R_3)$ gives the correct voltages ? $R_1 : R_2 : R_3$

A$2 : 1 : 2$
B$1 : 1 : 1$
C$2 : 2 : 1$
D$1 : 1 : 2$

Medium

STD 11 Science
JEE
STD 12 - 3. current electricity
Physics

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Download App

Download our appand get started for free

Similar Questions

Download our app
and get started for free