Get better at Circuit questions? (EMF, Internal resistance, potential dividers, etc)Watch
Physics is the only subject that's currently pulling me down and I don't know how I can improve at all.
Some help would be nice.
Thanks for that btw.
The temperature of the thermistor is increased so that its resistance decreases. State and explain what happens to the pd across the 1200 Ω resistor.
(voltage of supply constant) (circuit resistance decreases) (supply) current increases or potential divider argument (1)
hence pd across 540 Ω resistor increases (1)
hence pd across 1200 Ω decreases (1) or
resistance in parallel combination decreases (1)
pd across parallel resistors decreases (1)
pd across 1200 Ω decreases (1)
why does the current increase? I swear current always stays the same.