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explain how the resistance of a filament lamp changes as the potential difference across it increases

as the potential difference increases, the current increases (ohm's law). this causes the temperature of the filament to increase, causing the resistance to increase.
SQ
Answered by safiya q. • Physics tutor
8641 Views

How to structure an essay for A-level modern languages?

Introduction: state your argument within the context of your essay question. Introduce the 2/3 points that you will be making to support your argument.Paragraph 1/2/3 - these points can compare, contrast and...
MC
Answered by Michelle C. • French tutor
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How was Hitler able become Fuhrer of Germany by August 1934? (10 Marks)

There were a number of events which enabled Hitler to declare himself Fuhrer by August 1934. In February 1933 the Reichstag was set on fire. It was believed that this was an attack by a Communist, and as a r...
SB
Answered by Sophie B. • History tutor
7469 Views

There is a quarter circle with radius 8cm, what is the area of the quarter circle. The answer should be given in terms of pi, units are cm^2.

The area of a circle is given by the equation: A = pi r 2 where r is the radiusThis means the area of the quarter circle is just 1/4 th the area of the total circle.Therefore the area of the quarter circle i...
SC
Answered by Shrey C. • Maths tutor
7873 Views

How does antibiotic resistance arise?

Bacteria replicate by binary fission, at a rate of up to one division every 20 minutes. This replication results in genetically identical daughter bacteria to the original, however with each round of genome ...
IT
Answered by Izzy T. • Biology tutor
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