1. Who demonstrated by composition of electromagnetism and light that light is an electromagnetic wave?
2. Which of the following causes of power loss in AC circuit generally:
3. Assertion (A) The coulomb force is the dominating force in the universe.
Reason (R) The Coulomb force is stronger than the gravitational force.
Reason (R) The Coulomb force is stronger than the gravitational force.
4. A shop uses 250 units of energy in a month. How much energy was used in joules?
5. Brightness of the bulb decreases gradually with its period of use because of
6. Two resistors of 20 Ω are connected in parallel to each other in a circuit. Then, this combination is added with a resistance of 10 Ω in series. What will be their equivalent resistance?
7. When a potential difference of 140 V applied to a resistance of 10 Ω, calculate the amount of flowing current through it.
8. According to the international colour code for electrical wire, which of the following options represents neutral wire.
9. In electric apparatus 'Earth' is used
10. Ratio of voltage and direct current in a closed electric circuit:
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