2/A mains electricity hairdryer has a resistance of 46 Ω and a current of 5 A flows through it when in use. What is the voltage
across the hairdryer? (This is the mains voltage in the UK)
3/ What is the voltage across a lamp of resistance 4 Ω if a current of 2.5 A flows through it?
Please help :)
3/ What is the voltage across a lamp of resistance 4 Ω if a current of 2.5 A flows through it?
Please help :)
1 answer:
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Scalar Quantity :-
→ These are the quantities with magnitude only . These quantities doesn't have to be mentioned with direction
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Vector Quantity :-
→ These quantities are described with both Magnitude and Direction . These quantities follow special type of algebra called Vector algebra .
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Answer:
m = 14*26 = 364
Explanation:
overall magnification is given as m
mo magnification of objective lens
me magnification of EYE lens
where mo is given as
and me as
d is distant of distinct vision = 25.0 cm for normal eye
fe = focal length of eye piece
focal length of objective lense is 0.140 cm
we know that
m = 14*26 = 364