Question is ⇒ Which of the following relation is incorrect?, Options are ⇒ (A) P = VI, (B) P = IR, (C) P = V/R2, (D) P = V2/R, (E) , Leave your comments or Download question paper.

Question is ⇒ Which of the following relation is incorrect?, Options are ⇒ (A) P = VI, (B) P = IR, (C) P = V/R2, (D) P = V2/R, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Which of the following relation is incorrect?
A.	P = VI [Wrong Answer]
B.	P = IR [Wrong Answer]
C.	P = V/R² [Correct Answer]
D.	P = V²/R [Wrong Answer]
View Answer 10 -27 Explanation:- Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ In gases the flow of current is due to
electrons only.
positive and negative ions.
electrons and positive ions
electrons, positive ions and negative ions

⇒ 1 angstrom is equal to
10^-8 mm
10^-6 cm
10^-10 m
10^-14 m

⇒ Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct?
100 W lamp will glow brighter
40 W lamp will glow brighter
Both lamps will glow equally bright
40 W lamp will fuse

⇒ The number of electrons in the outermost orbit of carbon atom is
3
4
6
7

⇒ Which of the following does not use heating effect of electric current?
Electric furnace & Electric oven.
Electric iron.
Vacuum cleaner
Immersion heater.

⇒ The resistance of human body is around
5 ohms
25 ohms
250 ohms
1000 ohms

⇒ Current velocity through a copper conductor is
nearly 3 X 10⁹ m/s.
of the order of a few micro m/s.
independent of current strength.
the same as propagation velocity of electric energy.

⇒ The condition for the validity of Ohm' s law is that the
temperature should remain constant.
current should be proportional to voltage.
resistance must be wire wound type.
all of the above

⇒ When one leg of parallel circuit is opened out the total current will
reduce
increase
decrease
become zero

⇒ The unit of Peltier coefficient is
JC^-1
JA^-1
JV^-1
None of these

⇒ One coulomb charge equals the charge on
6.24 x 10¹² electrons
6.24 x 10⁴ electrons
6.24 x 10¹⁶ electrons
6.24 x 10¹⁸ electrons

⇒ In the case of direct current
magnitude and direction of current remains constant
magnitude and direction of current changes with time
magnitude of current changes with time
magnitude of current remains constant

⇒ The quantity in electricity analogous to friction in linear mechanical motion is
Resistance
Potential
Charge
Inductance

⇒ Ohm's law is applicable to
semiconductors & vacuum tubes.
electrolytes & carbon resistors.
arc lamps.
none of these.

⇒ Two heaters, rated at 1000 W, 250 V each are connected in series across a 250 V, 50 Hz ac mains. The total power drawn from the supply would be____ W.
1,000
500
250
2,000

⇒ When subjected to a transverse electric field, cathode rays move
Down the potential gradient
Up the potential gradient
Along a hyperbolic path
Along a circular path

⇒ "The total electric flux through any closed surface surrounding charges is equal to the amount of charges enclosed."
The above statement is based on
Maxwell's law.
Ampere's law.
Gauss's law.
Coulomb's law.

⇒ Which ofthe following lamps will have least resistance at room temperature?
25 W, 220V
100 W, 220V
200W, 220 V
60W, 220 V

⇒ For testing appliances, the wattage of test lamp should be
very low
low
high
any value

⇒ The minimum charge on an ion is
equal to the atomic number of the atom
equal to the charge of an electron
equal to the charge of the number of electrons in an atom
zero

⇒ What is the nature of graph between temperature and thermoelectric power ?
Parabola
Straight line
Hyperbola
None of these

⇒ An instrument which detects electric current is known as
voltmeter
rheostat
wattmeter
galvanometer

⇒ The thermo electric power at the neutral temperature is
Negative
Zero
Positive
None of these

⇒ Whether circuit may be AC. or D.C. one, following is most effective in reducing the magnitude of the current.
Reactor
Capacitor
Inductor
Resistor

⇒ When a voltage of one volt is applied, a circuit allows one microampere current to flow through it. The conductance of the circuit is
1 µ-mho
10⁶ mho
1 milli-mho
none of the above

⇒ Correct form of Ohm's law
I = VR
V = I
V = IR
above (b) and (c).

⇒ Pure metals generally have
high conductivity and low temperature coefficient.
high conductivity and large temperature coefficient.
low conductivity and zero temperature coefficient.
low conductivity and high temperature coefficient.

⇒ All good conductors have high
conductance
resistance
reluctance
thermal conductivity

⇒ The rating of a fuse wire is always expressed in
ampere-hours
ampere-volts
kWh
amperes

⇒ One newton metre is same as
one watt
one joule
five joules
one joule second