Question

Draw a diagram where there is a battery consisting of 4 cells 3v each ,for resistors 5ohm,10ohm,15ohm and 20ohm in series with a key ,ammeter along with a voltmeter across 20ohm.calculate the readings od ammeter and voltmeter

Answer 1

Answer

Explanation:

I hope it will help u

Answer 2

Given that,

Total potential $V=4\times 3$

$V= 12\ V$

Resistance $R_{1}=5\ \Omega$

Resistance $R_{2}=10\ \Omega$

Resistance $R_{3}=15\ \Omega$

Resistance $R_{4}=20\ \Omega$

All resistance are connected in series.

We need to calculate the total resistance

Using formula of series

$R=R_{1}+R_{2}+R_{3}+R_{4}$

$R=5+10+15+20$

$R=50\ \Omega$

We need to calculate the current in the circuit

Using ohm's law

$V=IR$

Put the value into the formula

$12=I\times 50$

$I=\dfrac{12}{50}$

$I=0.24\ A$

We need to calculate the voltage

Using ohm's law

$V=IR$

Put the value into the formula

$V=0.24\times20$

$V=4.8\ V$

Hence, The readings in ammeter is 0.24 A and in voltmeter is 4.8 V.