11. Battery capacity is expressed in . . . . . . . .
12. Mutual inductance of few coils can be increased by
13. mho' is the unit of . . . . . . . . of a substance.
14. Which of the following is a vector quantity?
15. Which of the following is not a basic component of a transformer:
16. A wire with black insulation during electric supply is
17. How much work is done in moving a charge of 2C across two points having a potential difference 10 V?
18. Ohm's law describes the relation between . . . . . . . . and . . . . . . . .
19. Nickel-Cadmium (Ni-Cd) battery is used in
20. A given conductor carrying a current of 1 ampere. It produces an amount of heat equal to 2000 J. If the current through the conductor is doubled, then the amount of heat produced will be
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