- ANegative, positive.
- BPositive, negative.
- CPositive, positive.
- DNegative, negative.
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There are n similar conductors each of resistance R. The resultant resistance comes out to be x when connected in parallel. If they are connected in series, the resistance comes out to be
|
(a) |
(b) |
(c) x/n |
(d) nx |
In the given figure, potential difference between A and B is
|
(a) 0 |
(b) 5 volt |
(c) 10 volt |
(d) 15 volt |
An electric motor operates on a 50 volt supply and a current of 12A. If the efficiency of the motor is 30%, what is the resistance of the winding of the motor
|
(a) 6 Ω |
(b) 4 Ω |
(c) 2.9 Ω |
(d) 3.1 Ω |
A condenser has a capacity 2μF and is charged to a voltage of 50 V. The energy stored is
|
(a) 25 × 105 Joule |
(b) 25 Joule |
(c) 25 × 10 erg |
(d) 25 × 103 erg |