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 the code given below.

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 :

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 c…

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…

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…

Who amongst the following is a pioneer in discovering the heating effect of electric current ?