MCQ
Assertion : Inductance coil are made of copper.
Reason : Induced current is more in wire having less resistance.
  • If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.

Answer

Correct option: A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
 If both assertion and reason are true and the reason is the correct explanation of the assertion.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A paramagnetic material is kept in a magnetic field. The field is increased till the magnetization becomes constant. If the temperature is now decreased, the magnetization
The binding energy of deuteron ${ }_1^2 H$ is 1.112 MeV per nucleon and an $\alpha$-particle ${ }_2^4 He$ has a binding energy of 7.047 MeV per nucleon. Then in the fusion reaction ${ }_1^2 H +{ }_1^2 H \rightarrow{ }_2^4 He + Q$, the energy Q released is
A potentiometer having the potential gradient of $2\, mV/cm$ is used to measure the difference of potential across a resistance of $10 \,\Omega$. If a length of $50\, cm$ of the potentiometer wire is required to get the null point, the current passing through the $10 \,\Omega$ resistor is (in $mA$)
The current in a $LR$ circuit builds up to $3/4^{th}$ of its steady state value in $4\,sec$. The time constant of this circuit is
Consider the following statements regarding the photoelectric eff ect experiment:

$(I)$ Photoelectrons are emitted as soon as the metal is exposed to light.

$(II)$ There is a minimum frequency below which no photo-current is observed.

$(III)$ The stopping potential is proportional to the frequency of light.

$(IV)$ The photo-current varies linearly with the intensity of the light.

Which of the above statements indicate that light consists of quanta (photons) with energy proportional to frequency?

A car is moving with at a constant speed of 60kmh$^{-1}$ on a straight road. Looking at the rear view mirror, the driver finds that the car following him is at a distance of 100m and is approaching with a speed of $5\ kmh ^{-1}$. In order to keep track of the car in the rear, the driver begins to glance alternatively at the rear and side mirror of his car after every $2s$ till the other car overtakes. If the two cars were maintaining their speeds, which of the following statement $(s)$ is/are correct?
In the given circuit the current $I_1$ is .............. $A$
If a conductor has a potential $V \neq 0$ and there are no charges anywhere else outside, then:
The output from a $NAND$ gate having inputs $A$ and $B$ given below will be.
A gate has the following truth table
P 1 1 0 0
Q 1 0 1 0
R 1 0 0 0
The gate is