1. The length of a conductor is halved. Its resistance will be :
2. In the above question, the conductance:
3. Siemen is the unit of:
4. How much electric energy is consumed by a 100 W lamp used for 6 hours everyday for 30 days?
5. Suppose H1 is the heat generated per second in the filament of a 100 W, 250 V lamp and H2 is the heat generated in the filament of a 200 W, 250 V lamp. Then H1/H2 is equal to:
6. Two wires of copper are of the same length but'have different diameters. When they are connected in series across a battery, the heat generated is H1 When connected in parallel across the same battery, the heat generated during the same time is H2 Then :
7. In questions 135, w hen the wires are connected in series, the heat produced in the thinner wire is H1 and that in the thicker wire is H2. Then :
8. Kirchhoffs first and second laws for electrical circuits are consequences of:
9. A 5 A fuse wire can with stand a maximum power of 1 W in circuit. The resistance of the fuse wire is:
10. The length and radius of an electric resistance of a certain wire are doubled simultaneously, then the: