What is the correct value of the temperature coeff‌icient, if the resistance of a field coil is 60 Q at 30°C and 80 Q at 90°C?

In accordance with the classical electromagnetic theory, what is the approximate initial frequency of the light emitted by the electron revolving around a proton in hydrogen atom?

Which of the following options is the approximate range of resistivity of the semiconductors?

Which of the following options is a device that is used for converting one form of energy into another?

types of wave has these characteristics? i) The wave travels in a straight line from transmitting antenna to the receiving antenna. ii) It is used for line-of-sight communication.

What is the bandwidth of video signal required for the transmission of pictures?

Jupiter is 317 times more massive than the earth. its gravitational attraction is _____ earth's.

Ammeters should be connected ________ with the circuit being tested.

_____ are especially vulnerable to displaced aggression.

When steam condenses into water, __________.

Very small organisms, like paramecia or protozoa, moving around in water __________.