MCQ
L, C and R represent physical quantities-inductance, capacitance and resistance respectively. The one which has same dimensions as time is:
  • A
    $\frac{ C }{ L }$
  • B
    $\frac{1}{ RC }$
  • $\frac{ L }{ R }$
  • D
    $\frac{ RL }{ C }$

Answer

Correct option: C.
$\frac{ L }{ R }$
(c)$\frac{ L }{ R }$

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

Two identical thin bar magnets each of length l and pole strength m are placed at right angle to each other with north pole of one touching south pole of the other. Magnetic moment of the system is

(a) ml

(b) 2ml

(c)     

(d)  

The internal resistances of two cells shown are 0.1 Ω  and 0.3 Ω. If R = 0.2 Ω, the potential difference across the cell

(a) B will be zero

(b) A will be zero

(c) A and B will be 2V

(d) A will be > 2V  and B will be < 2V

When light is refracted from air into glass

(a) Its wavelength and frequency both increase

(b) Its wavelength increases but frequency remains unchanged

(c) Its wavelength decreases but frequency remains unchanged

(d) Its wavelength and frequency both decrease

1 Pico farad =
The expression of Y in the above circuit is:

A positive charge Q is uniformly distributed along a circular ring of radius R.A. small test charge q is placed at the centre of the ring Fig. Then:

Assertion  :   A loosely round helix made of stiff wire is suspended vertically with the lower end just touching a dish of mercury. When a current is passed through the wire, the helical wire executes oscillatory motion with the lower end jumping out of and inside of mercury.

Reason     : When electric current is passed through helix, a magnetic field is produced both inside and outside the helix.

(a) 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.

A sphere of radius 1 cm has potential of 8000 V, then energy density near its surface will be

(a) 64  

(b) 8  

(b) 8  

(d) 2.83  

Calculate the equivalent resistance between A and B

(a)  W

(b) 3 W

(c) 6 W

(d)  W

A dielectric slab is inserted between the plates of a capacitor. The charge on the capacitor is Q and the magnitude of the induced charge on each surface of the dielectric is Q':
  1. Q' may be larger than Q.
  2. Q' must be larger than Q.
  3. Q' must be equal to Q.
  4. Q' must be smaller than Q.