A wire of a given material has length "I' and resistance "R". Another wire of the same material having three times the length and twice the area of cross section will have a resistance equal to:
A3R
B1/2 R
C2/3 R
D3/2 R
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Related Questions:
Which of the following statements is/are true in case of an incandescent filament bulb?
- (a) Filament can be made of tungsten or nichrome.
- (b) The glass envelope covering the filament is filled with inactive gases such as nitrogen or argon.
- (c) Since the filament used is thin, its resistivity is very low.
- (d) The resistivity of the filament is low to allow more current.
- (e) The filament material used should have high melting point.
ഉപഗ്രഹങ്ങൾ ഇല്ലാത്ത ഗ്രഹം
Who invented electric battery ?
Why does a mechanic apply grease between the moving parts of a bicycle or a motor?
'Odometer' സഞ്ചരിച്ച ദൂരവുമായി ബന്ധപ്പെട്ടിരിക്കുന്നതുപോലെ 'Compass' എന്നുപറയുന്നത് താഴെ പറയുന്ന ഏതുമായാണ് ബന്ധപ്പെട്ടിരിക്കുന്നത് ?