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cbse class 10 science chapter 12 Let the resistance of an electrical component remains 20903

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Published on Jun 7, 2015

NCERT Solutions FOR CLASS 10 science Chapter 12 electricity,
Intext Qusetionv 3 page no.:-209
Let the resistance of an electrical component remains constant while the potential difference across the two ends of the component decreases to half of its former value. What change will occur in the current through it?
Ans: According to Ohm’s law
V = IR
⇒ I=V/R ---------- (1)
Now Potential difference is decreased to half
∴ New potential difference Vʹ=V/2
Resistance remains constant
So the new current Iʹ = Vʹ/R
= (V/2)/R
= (1/2) (V/R)
= (1/2) I = I/2
cbse class 10 science chapter 12 Let the resistance of an electrical component remains

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