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The charge that flows through the shower in 300 seconds is 18000C. The electric shower has a power of 13.8 kW. Calculate the resistance of the heating element in the shower.

Firstly, we want to define what information we know from the question: ∆Q = 18000C; ∆t = 300s, P = 13.8kW Therefore, to calculate the resistance we can use the power equation, P=I 2 R, and calculate the curr...
BH
Answered by Beth H. • Physics tutor
8556 Views

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
8533 Views

explain the relationship between resistance and voltage in a filament lamp

As voltage increases across the filament, the current also increases. The increase in current causes the temperature in the filament to rise. The increase in temperature causes the resistance within the fila...
WP
Answered by William P. • Physics tutor
15696 Views

define 1 volt

A volt is a joule per coulomb.If you're struggling to remember try and picture the situation. Imagine current as individual units of charge passing through a battery. The charge has passed round the whole ci...
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Answered by Alice D. • Physics tutor
4922 Views

How does the red shift support the Big Bang theory?

when we observed stars from the Earth, we noticed that almost all of the light emitting from the stars was being shifted to the red end of the spectrum. This indicates that the wave was essentially being 'st...
IC
Answered by Isla C. • Physics tutor
2813 Views