Q3 of 41 Page 209

Let the resistance of an electrical component remain 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?

We know, From Ohm’s Law:

Since the resistance is constant and the potential difference is decreased to half of the former value. Thus, the current through the component will also decrease to half of its former value.


More from this chapter

All 41 →
1

On what factors does the resistance of a conductor depend?

 2

Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why?

 4

Why are coils of electric toasters and electric irons made of an alloy rather than a pure metal ?

 5

Use the data in Table on page 23 of this book to answer the following:

(a) Which among iron and mercury is a better conduction?


(b) Which material is the best conductor?