2. The ability of charged bodies to exert force on one another is attributed to the existence of
3. Electric lines of force originate from the ______
4. When current passes through two parallel conductors placed in a magnetic field in the same direction, _________ force acts on the conductors.
5. The number of protons in an atom determines which property?
6. In the photoelectric effect,
7. The speed of a wave “v” is given by
8. The potential difference between the terminals of a battery when no charge is allowed to flow in an external circuit is
9. If the resistance of a wire is 10Ω and a current of 2A flows through it, what is the potential difference across the wire?
10. _________ is the current in a coil of 0.3H if 240V AC at 50Hz is applied.
11. When a mirror rotates through an angle, the reflected beam rotates _______ that angle.
12. Calculate the force between two charges, one with a charge of +2C and the other with a charge of −3C separated by a distance of 2m in a vacuum.
13. From Faraday’s law of electromagnetic induction, _______ magnetic field does not induce current in a closed loop.
14. The energy stored in a capacitor is given by
15. From P=QVBsinθ, the force is maximum when θ is
