Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Current Electricity question

2020 · Q159
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Physics
  4. /Current Electricity
  5. /2020 · Q159

Current Electricity question

2020 · Q159

NEETPhysicsCurrent ElectricityMCQ+4 / −1
The solids which have the negative temperature coefficient of resistance are :
  1. A
    insulators only
  2. B
    semiconductors only
  3. C
    insulators and semiconductors
  4. D
    metals
View written solutionFree

Correct answer: C

The temperature coefficient of resistance is negative for semiconductor and insulators, and it is positive for metals.

PreviousNext

More from Current Electricity

  • Which of the following acts as a circuit protection device?2019 · MCQ
  • Six similar bulbs are connected as shown in the figure with a DC source of emf E, and zero internal resistance. The ratio of power consumption by the bulbs when (i) all are glowing and (ii) in the situation when two from section A and one… Includes diagram2019 · MCQ
  • In the circuits shown below, the readings of voltmeters and the ammeters will be : Includes diagram2019 · MCQ
  • A carbon resistor of (47 ± 4.7) kΩ is to be marked with rings of different colours for its identification. The colour code sequence will be2018 · MCQ
  • A battery consists of a variable number n of identical cells (having internal resistance r each) which are connected in series. The terminals of the battery are short-circuited and the current I is measured. Which of the graphs shows the…2018 · MCQ
  • A set of n equal resistors, of value R each, are connected in series to a battery of emf E and internal resistance R. The current drawn is I. Now, the n resistors are connected in parallel to the same battery. Then the current drawn from…2018 · MCQ
  • The resistance of a wire is 'R' ohm. If it is melted and stretched to 'n' times its original length. its new resistance will be2017 · MCQ
  • A potentiometer is an accurate and versatile device to make electrical measurements of EMF because the method involves2017 · MCQ