Question

When a 24 volt battery is connected to a resistor the current in it is 0.4 ampere what is the resistance of the register? What would be the current through it when it is connected to a battery of 6 volt ?

Answer 1

Answer:

R= V/I

so , Resistance = 24/0.4

= 24×10/4= 60 ohms

if p.d becomes 6v then

R= 6/0.4= 6×10/4=15 ohms

Answer 2

Answer:

9.6 Ohms

I=1.6 A

Explanation:

Given:-

V=24v

I=0.4 A

To Find:- Resistance across resistor

R=V x I

therefore, 24×4/10

which is equal to 2.4×4=

9.6 Ohms

we know that resistance is

always constant

NOW, V=6

& R=9.6 (CONSTANT)

therefore,

when it is connected to

to 6 volt, by Ohms law

R/V=I

THEREFORE,9.6/6

I=1.6 A