v=I*R, i.e V is directly proportional to I.
now P=V*I. so V=P/I. thus v is inversely proportional to I.
so what is the correct one? If both are correct than for
which kind of condition this 2 differ
- 3 Answers
- 6202 Views
- I also Faced
- E-Mail Answers
Answer Posted / meenakshi
hey,ur question is wrong men...in the first part i.e, V
proportional I is correct in accordance vid ohm's law. but
in de second part,dc electric power is just an exact
multiplication of voltage and current.n there is no
relation as u say.vil make u understand r8 nw...juz considr
a ckt havn a 18V battery and a lamp of fixed resistance of
3 ohm.nw curnt thru de ckt is 18/3=6A.now am gona increase
voltge alone to 36V WITHOUT DISTURBN THE LAMP..now de curnt
vil b 36/3=12A. coming to the power,for the first case it
is 108W n for the second case its 432W (P=VI).now what u
ave to understand is,V inversely prop to I vud ave been
correct iff powers of two ckts were constant.but
practically speakn it is not so as u can very wel c frm the
above mentioned example.
| Is This Answer Correct ? | 8 Yes | 1 No |
Post New Answer View All Answers
What is the main purpose of c.f.b.c.boiler
Purpose of providing neutral isolation panel for parallel operation of diesel generator
When a single pase capacitor run motor- run on 230vac and Case(1)run with 8 Mfd 250 vac.capacitor , Case( 2) run with 8 Mfd 400vac capacitor. What is difference between both case regarding power ,efficiency etc?
how to calculate energy of 3-phase motor?
What is Antipumping Function & If we have C.T how we find the Ratio ?
Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?
th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.
What are the advantages of autotransformer?
If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?
If any cable burnt how can we identify it burnt by high current of high voltage?
explain working principle of earth leakage relay
Benifits of 3ph 4 wire metering over 3ph 3 wire
How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?
Explain the operation of grid connected central solar inverter ?
how we can do the insulation on secondary of ct explain and so that tan delta will within limit
