Saved Bookmarks
| 1. |
Rewrite the following statements by selecting the correct options:i. The device used for producing a current is called………. (a) a voltmeter (b) an ammeter (c) a galvanometer (d) a generatorii. At the time of short circuit, the current in the circuit……… (a) increases (b) decreases (c) remains the same (d) increases in stepsiii. The direction of the magnetic field around a straight conductor carrying current is given by…… (a) the right hand thumb rule (b) Fleming’s left hand rule (c) Fleming’s right hand rule (d) none of theseiv. The resistance of a wire is 100 Ω. If it carries a current of 1A for 10 seconds, the heat produced will be………. (a) 1000 J (b) 10 J (c) 0.1 J (d) 10000 Jv. If 220 V potential difference is applied across an electric bulb, a current of 0.45 A flows in the bulb. What must be the power of the bulb?(a) 99 W (b) 70 W (c) 45 W (d) 22 W |
|
Answer» i. (d) a generator ii. (a) increases iii. (a) the right hand thumb rule iv. (a) 1000 J v. (a) 99 W |
|