After using for some time, big transformers get heated up. This is due to the fact that 1. current produces heat in the transformers 2. hysteresis loss occurs in the transformers 3. liquid used for cooling gets heated Select the correct answer using the code given below.

Working of safety fuses depends upon 1. magnetic effect of the current 2. chemical effect of the current 3. magnitude of the current 4. heating effect of the current Select the correct answer using t…

How many of the following materials can be attracted by a magnet? 1. Plastic 2. Carbon 3. Aluminium 4. Stainless Steel Select the correct answer using the code given below :

Which of the following statements are true about the Plasma state of matter? (i) Particles in this state are in ionized form (ii) Light in the LED bulb is related to plasma state (iii) Sunlight is al…

Which of the following statements are correct about the electrical resistance and resistivity of a wire? 1. Both quantities depend on the area of cross-section of the wire 2. Both depend on the tempe…

Given below are two statements, in which one is labelled as Assertion (A) and the other as Reason (R): Assertion (A) : A person travelling in a car with closed glass windows and doors is safe from th…