Which of the following is a good conductor of heat but a bad conductor of electricity ?
A). Celluloid
B). Rubber
C). Asbestos
D). Mica
Mica
Mica is a good conductor of heat but bad conductor of electricity.
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1. When some detergent is added to water, the surface tension:
2. 'Mirage' is an example of
3. A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be
4. Which of the following is the unit of electric current ?
5. Which is the coldest planet?
6. The term ''equinox' means
7. Colours of thin films are due to?
8. If a carrier wave of 1000 kHz is used to carry the signal, the length of transmitting antenna will be equal to ________.
9. The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 127.5 V ?
10. Sound waves in air are
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