MCQ
Which resistor is difficult to make of having a value less than about 2 Ohms?
  • A
    Iron Resistor
  • B
    Carbon Resistor
  • C
    Wire wound Resistor
  • D
    Both b and c

Answer

  1. Carbon Resistor

Explanation:

Carbon resistor is difficult to make of having a value less than about 20 Ohms because they have ability to withstand high energy pulses, when current flow through the carbon composition body conducts the energy. So carbon resistor can be made with a higher resistance.

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 hollow sphere of charge does not have electric field at:

Which curve may best represent the current deflection in a tangent galvanometer

(a) A

(b) B

(c) C

(d) D

If the two ends of a p-n junction are joined by a wire:
  1. There will not be a steady current in the circuit.
  2. There will be a steady current from the n-side to the p-side.
  3. There 'will a steady current from the p-side. to the n-side.
  4. There may or may not be a current depending upon the resistance of the connecting wire.
Calculate the surface integral of a magnetic field over a surface.
Ten grams of 57Co kept in an open container beta-decays with a half-life of 270 days. The weight of the material inside the container after 540 days will be very nearly:
  1. 10g
  2. 5g
  3. 2.5g
  4. 1.25g
Distance between two slits $S_1$ and $S_2$ in Young's double slit experiment is 1 mm . What should be the width of each slit so that the $10^{\text {th }}$ maximum of the double slit is obtained at the central maximum of the slit?

When the P end of P-N junction is connected to the negative terminal of the battery and the N end to the positive terminal of the battery, then the P-N junction behaves like          

(a) A conductor

(b) An insulator

(c) A super-conductor

(d) A semi-conductor

In an ac circuit, the potential differences across an inductance and resistance joined in series are, respectively, 16V and 20V. The total potential difference across the circuit is.
The coefficient of mutual induction between two coils is 1.25H. If the rate of fall of current in the primary is 80 As-1, then the induced emf in the secondary coil will be.
The muscles of a normal eye are least strained when the eye is focused on an object:
  1. Far away from the eye.
  2. Very close to the eye.
  3. At about 25cm from the eye.
  4. At about 1m from the eye.